GM CAR AND TRUCK AUTO REPAIR HELP EXPERT MECHANICS

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2010-12-29T21:14:00.000-06:00

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GM CAR AND TRUCK AUTO REPAIR HELP EXPERT MECHANICS: Chevy Equinox electrical Problems

2010-06-30T21:26:00.000-05:00

Picture of fuses

Trailblazer Starts Then Dies at Idle

2009-12-14T09:26:00.003-06:00

2006 Chevy Trailblazer 4x4. It runs fine except now that it's cold I go out in the morning and it cranks and starts, and then immediately dies. After it runs for awhile and warms up, I can go out and it starts right up and stays running. No check engine light.

JK:

This may be one of 2 problems.

1. The fuel pressure may be low, and the rise in temps helps with that. A weak fuel pump or plugged fuel filter would cause this. Aside from istalling a fuel poressure gauge, you could try and have someone bang on the bottom center of the fuel tank under the truck. This will sometimes free up a weak pump.

2. The throttle bore and plate have carbon on it. Carbon will effect starting and idleing. Especially on these electronic throttle systems.

You can remove the air duct from the engine and clean out the bore and throttle plate using carburetor / choke cleaner real good. Then take it for a ride and do a few hard accelerations to clear the cleaner out.

Does Your Radio Display LOC or INOP ?

2009-11-01T16:19:00.001-06:00

Does Your car or Truck Radio Display Say LOC or INOP ?

Your radio is locked and will not play any sound.

Many times this is caused by disconnecting or replacing the battery, or radio.

You will need to enter an unlock code.

We can get you the theft code and simple instructions to get the radio unlocked quickly.

Just click on the link below and we will show you how...

Radio Unlock Codes

My Car 2006 Pontiac G6 Fuel Mileage Poor

2009-10-15T22:34:00.001-05:00

MY CAR HAS A 3.5 L ENGINE, V6 WITH DUAL EXHAUST. I AM GETTIG TERRIBLE GAS MILEAGE - 440 KM OUT OF THE LAST TANK. WHAT CAN I DO TO CHANGE THIS.

GM Tech:
Unless the check engine light is on, there really is not much that can be done.
If the car were burning that much gas, the engine light should be on and trouble codes would be stored in the PCM computer.
Todays cars are very sensitive to changes in fuel economy.
Other that the normal maintenance of checking tire pressure, accelerating smoothly, lessening the weight in the trunk, etc, the car should be running at the optimal fuel economy. If it were not, then the check engine light would be on

2001 Chevrolet Malibu Codes EGR Catalyst

2009-08-29T19:37:00.004-05:00

01 Chevy Malibu
Mileage = 187,000
Engine size = 3.1
SES Check Engine Light
EGR, low
Car had a low mileage motor installed before i bought i would say around 50,000 or less
Work done to repair this problem = plugs wires checked coils new fuel filter replaced EGR
01 malibu low mileage motor car will act like its starving for fuel and lose power may go 25 and may not go at all never really dies out that much sometimes will start right back but usually have to leave sit a couple mins. And then it may be fine for a couple days short distances the CEL was on for EGR which i replaced to no avail car has strong pressure at the rail when it wont start ? i thought fuel strainer car will throw no codes except low catalyst after egr i dont know what to do with it its stalling out on me and its dangerous because it wont move when it does it and it hisses like out of the maf?? Sometimes i will have to let the car sit but sometimes just for a minute or 2 and it seems to run ok again it acts like it is fuel because if you get on it hard it will sputter but at like 4500 and up but at times not do that.

KK:You may have more than one thing going on with your car.The code for the Catalyst efficiency low P0420, along with the problem of no power or acceleration, indicates the Catalytic Converter is plugged. This is very common for this condition, as well as the code for the EGR. But, this usually will not cause the car to stall, and would not cause it to be hard to re-start. That may be another issue.You may have an ignition module going bad, a crank sensor problem, faulty ignition switch, a ground wire problem, or other problem.I would get the converter checked out first.

Pontiac Grand Am Overheating

2009-07-20T22:58:00.003-05:00

1998 Pontiac Grand Am gt 3.1
Mileage = 118,000
Engine size = v6
GM tech = KK
question = my 98 grand am has no heat. The gauge on the dash works. The engine gets hot, and the car has not over heated. Is my problem thethermostat or the heater core?

Several things can cause a no heat condition. Assuming the coolant is full, there could be air pockets in the cooling system- this engine is prone to having leaking intake manifold gaskets, and/or blown headgaskets. Either can make air pockets in the cooling system, and the heater core cannot transfer heat from an air pocket into the interior. Will not necessarily overheat. Possibly a plugged heater core not allowing coolant to flow through it. Possibly a temp. door problem in the dash not directing air over the heater core.
A bad thermostat will usually either cause an overheating, or an engine that will not get up to proper operating temp. If the coolant temp is lower than normal, then would suspect a stuck open thermostat.

Buick ABS / Traction Light On With Codes

2009-06-28T10:42:00.003-05:00

ABS problem with my 2003 Buick Lesabre
dash lights = ABS / Traction
GM Computer codes C1214
GM tech = JK
question = ABS and traction light came on as leaving house where car had been parked for several days. Checked owners manual then scanned internet for more info. Found your site with the ABS codes, but we were unable to find a parts store that could read the code. Took the car to the dealer who read the code as C1214. Your site gives the definition of "Brake Control Relay Contact Circuit Open," which doesn't sound that bad. The dealer says the EBCM has to be replaced for about $1100. We just wanted to know if this repair is consistent with the code, given the high cost. Thank you for your advice.

JK: Hello and welcome. A service bulletin search came up with no related results.Yes, this ABS code C1214 description does sound fairly harmless. A relay is usually a very inexpensive part to replace. The problem is that the system relay is integral to the EBCM (Electronic Brake Control Module). The diagnostic chart for this code is pretty straight forward. A couple of function tests with the scanner, and a few resistance checks with the volt / ohm meter. The EBCM is usually the cause. The cost at the dealer is consistent with this repair.

Programming of an EBCM is required if replacing with a unit that was not the original to the car. This would need to be done with a dealer scanner. I believe this company i sent the link to mostly repairs your unit, so programming would not be needed.Replacement of the unit is a little tricky. It is located on top of the frame rail where the front and left ( driver side ) come together. It is bolted to the ABS valve assemebly. Removal of the left side inner fender shield, and some TORX sockets are needed.I think my website will let me send you some pic of its location and removal procedures if this is something your hubby would like to tackle. Again, a little tricky, even for a guy who does this for a living.

Pontiac Grand Prix 3800 V6 SES Light Vacuum Problem

2009-06-13T01:15:00.002-05:00

Problem with my 2001 Pontiac Grand Prix GT 3.8 L V-6 (non-supercharged)
My Service engine soon.
p0108
Just replaced the upper intake manifold.
I have a 2001 Grand Prix GT (non-supercharged). I just replaced my upper intake manifold due to warping causing a coolant leak. After putting everything back together I have a problem with the vacuum system. At idle when I take off the oil cap there is way to much suction coming through. It pulls the cap back hard. When I cover it with my hand the engine RPMS go way up and it sounds like the vacuum is starving for air. Is it possible that while replacing the upper intake I spilled coolant into the tube leading to the PCV valve? I checked all vacuum lines and they seem to be all right and hooked up correctly. Also I did not use any extra sealant on the gaskets as I heard this can cause problems.Why does my GP doing this.

2001 Chevrolet Impala Heat on Drivers Side Cool Passenger Side

2009-06-12T07:28:00.006-05:00

My 2001 Chevy Impala has heat on one side vent, cool the other. I have tried directing air flow to defrost and then air flow to floor, NO HELP. With GM climate controlled systems in the past there was some vacum controlled box that controlled air flow, could some thing be stuck in one position? With the cool weather beginning I would like some heat on the drivers side. Could someone help with something simple, or is this major and have to be taken to the dealer?

GM Tech JK:
This is acommon problem with what is know as the "Drivers side Temp door Actuator"
There is an actuator / motor for the passenger side, and another for the drivers side.
This is what happens when the drivers side fails. Similar condition on pasenger side if that one were the problem.
You can try to disconnect the battery for a few minutes, then reconnect.
Start car and do not touch HVAC control for 3 minute.

Turn car off for 1 minute.

Start car and check operation.

Sometimes this will reset the system, but will probably happen again.

The motor is located under the drivers side of the dash. It bolts to the Side of the HVAC case.

My 2004 Chevy Trailblazer SES Codes P0128, P0410, P0455, P0172

2009-06-11T23:26:00.004-05:00

Problem with my 2004 Chevy Trailblazer LT 4x4
Engine size = 4.2
dash lights = SES
GM Computer codes p0128, p0172, p0410, p0455, p0606
GM tech = MW
question = SES came on about 1 wk ago. Cold weather. Took TB to
garage, ran codes and 5 codes came back. The garage checked out a few
of the codes and said that all values and sensors were fine. Garage did not
specify which codes they checked. Said they only checked out a few of the
codes. SES will not reset, comes right back on with the same codes.
Garage feels that it must be the computer and it needs replaced. I have
read that if the computer is bad, the vehicle will run rough. It runs fine, no
indication of anything wrong other than SES light. Could there be
something else causing all these codes, something simple instead of
replacing the computer?

Yes, I did get your last response. I wasn't sure if I was suppose to reply or not. As of right now, the SES light has been an ongoing thing. It is always a different reason why it is on. O2 sensor, other sensors related to emissons system, specifically the secondary air system. The garage has replaced parts to it, about a year ago. Those parts were the first they checked
and they said they are fine. I don't even remember all codes. Everything has been running great for about a year. Haven't had the light on. Light came on about a week ago and my husband drove it for the entire week with the light on before we put it in for service. The garage did not tell us which codes were in history and which were new. They just gave us a list of codes. The next day after the garage looked at it is when we noticed gas smell and from a full tank, saw that it was burning through gas fast. Which would make sense with the
two of the codes, 455-large leak, 172-running rich. Garage said they cleared the codes several times and each time they cleared the SES light came right back on with the same codes. Basically they said it was probably the computer giving false codes and to call the dealership. In the meantime, took it to another garage. Found a loose wire, I believe a ground wire perhaps???? Not sure what wire, to what system, but found a loose wire, tightened back where it belonged and cleared the codes. That was yesterday, so far the SES has not come back on. Can let you know if SES comes back on, driving it today to see if light
comes back on. I wonder if it were something that simple like a loose wire that caused it all? On a side note, I have a Chevy Impala 03, that had abs light with service traction soon code c1218(I think) anyhow, turned out to be a loose ground wire. Tightened wire back in its place, light reset, hasn't been back on since, about 3wks now.

GM Tech:
Well, the P0455 would have nothing to do with running rich, or the P0172 code.
P0455 is usually a gas cap problem, or a vent solenoid.
P0128 is "Coolant temp below thermostat operating threshold" usually caused by a faulty thermostat. That may cause the rich code, since engine temp is not high enough, and engines always burn more gas when cold, as compared to being warmed up.
P0606 is an internal fault in the PCM. This may be the cause of more than just this codes, or only this code. The ground may have fixed this one. Also, there is a PCM programming update for this year to correct false P0606 code.

2001 Oldsmobile Aurora V6 and V8 Code P0410 P0385

2009-06-10T16:30:00.004-05:00

2001 Oldsmobile Aurora codes.
Mileage = 85400
Engine size = 3.5 3500
check engine codes p0385 & p0410
P0410 can on first then po385
The light would go out for a short time but would come back on. I have been trying to investigate the problem. The p0385 started up next the tach started go nuts.
Please send me information on how to fix . I do antique cars but this new cars are something else.
Please delail steps .. location and parts needed. I know that p0410 involves the secondary air injection pump system and the po385 involves crankshaft position sensor b circuit. I don't know if there is a connection or two difference problem.

JK:
Thank you for the tip/donation.
These codes are probably not related.p0410- most likely cause is the AIR pump has failed and needs to be replaced. GM has a kit with new pump and hose- part # 19515548. Instructions included with kit.Check the AIR fuse in the underhood fuse block fisrt. If it is blown, then the problem is the pump, and possibly the harness is melted. If fuse is not blown, and the pump is good. Click this link for another common P0410 AIR system problem.

p0385 is the crank position sensor. Also from under the car. A little tough to get to. Will need a socket, extension, and swivel to remove. Quite hard on the wrist. Removal of the starter will make it easier, but not absolutely necessary. After replacing the crank sensor, you will need to have a "crankshaft variance re-learn" procedure done, or the same code will come back. This needs to be done with a scanner. I will gather some pics to help you with these repairs and send them...

2001 Pontiac Grand Prix Theft / Security Light

2009-06-09T12:34:00.002-05:00

Theft problem on my 2001 pontiac grand prix Se

Mileage = 101250 Engine size = 3.1 dash lights = security light codes = EGR Valve

Why does my 2001 pontiac grand prix start and die after 3seconds. Some one told me to have the battery checked and it was bad. Rangood for 3 days and started up again. I noticed after all this started mysecurity light is flashing on my dash. Any tips or suggestions I amlost.

JK:The most common cause for this problem is the "passlock ignition cylinder".This ignition cylinder has the sensor for the security system in it, and it sends the signal to the body control module(BCM) . The bcm should be scanned for codes to be sure. There may a codes B2960, or B2958.This is a telltale sign of the cylinder being bad. Once the cylinder is replaced, it will have to be programmed. That cylinder is approx $175 at the dealer. Leaving the key on is not the proper re-learn procedure.Click here for theft / security re-learn procedure.

Eventually this will not work, and the car will not start even after waiting.Expect to pay approx. 2 hrs. labor for replacement, whether it be the dealer, or any repair facility

Chevy Lumina Won't Start Theft Security Problem

2009-06-02T23:51:00.004-05:00

I have a 97 chevy lumina with a no start. Engine turns but no fuel. Traced it back to no power to the fuel pump relay and no signal from the pcm. Put power to the grey wire and pump runs. My question is can the resistor in the key or theft-lock cause no power from pcm?

GM Tech JK:

Thinking that this is a security problem.
These years / models have a common problem where 2 little wires on the back side of the ignition cylinder break. These wires are what sends the signal from the key in the cylinder for the secruity system.
When the key is in the cylinder, the cylinder reads the key chip. It is just a resistor.
The chip completes a circuit in the cylinder so the security module can read the resistance.
When these wires break, the module cannot read the key, so starting is dissabled. The PCM does not get the "OK to start:" signal.
Depending on some conditions, the system will either dissable fuel pump, or injector pulse.
Repacement of the key cylinder is required to repair this.

My 2005 Chevrolet Silverado Drivers Side Vents Always Hot with A/C On, Passenger Side Blows Cold

2009-06-01T08:40:00.002-05:00

There are 2 common causes for this.

1. The Heater A/C control panel, which is also called the control module, has a software problem where is causes an overftravel of the the temperature door motors. There is a motor for each side. The control module would need to have a programming update done to it. This would only be able to be done at the dealer with the scan tool and GM terminal.

2. The actual drivers side temp door motor has failed. Replacement of the motor would be needed. These motors are approx. $80. Expect 1 1/2 hours labor to replace.

This is actually more common than the reprograming. We have done reprogramming first, only to find out that the motor itself was faulty. Only way to be sure is to have a scanner on it to control the door motor, and see if it moves.

You can try to reset the system by turning key off, removing the fuse labled "HVAC/ECAS" in the under hood fuse box for 1 minute. Re-install fuse,
Then start the truck and do not touch any A/C control for 3 minutes.
Turn key off for 10 seconds, then start truck and check operation.
Sometimes this will reset the door motor, but may act up again. could be in a few hours, days or weeks. No way tell.

2007 Chevy Impala Clunk in Front of Car

2009-05-29T22:01:00.002-05:00

Suspension problem on my 2007 Chevrolet Impala. There is a clunk type noise. Can describe as a rattle as well. It is in the rear of my Impala. I can hear it when drive over bumps or just when turning the car. The sound is on both side. The shop checked the rear shocks / struts and said that they not the problem. What can cause my noises.

GM Tech JK:This sounds like a very common problem with the 2006, 2007 Chevy Impala. There is a rear stabilizer shaft in the rear suspension. It has 2 link rods, 1 on each side. The ball / socket on each end of each link can get worn and loose. This will cause the noise that you are hearing.

See this link for more info and picture...

http://greatautohelp.com/chevyanswers/2006-impala-rattle-rear

2000 Chevrolet 5.3L Silverado 1500 Hard to Start

2009-05-25T23:48:00.002-05:00

2000 Silverado Z-71 5.
Tune up at 100K with new fuel pump/sending unit.
New fuel filter. New fuel pressure regulator. Throttle body cleaning. Air filter (K&N) cleaned and re-oiled. Fuel injector cleaner additive.
question = Truck suddenly became hard to start. Used to start when you touched the key and in 1 day it began to crank for a long time prior to starting. Turning key (fuel pump) on and off 2-3 times before cranking seems to help allot. Fuel pump was replaced during tune-up at 100K. No notable vacuum leaks, pressure regulator replaced with no change. Mileage has gotten considerably worse, especially when towing. No codes displayed at all. Plugs replaced at 100K were OEM Autolites. Any ideas before I drop the tank again?

MW:
The fact that this problem started all of a sudden, and the turning of the key a few times to help it start does make me think a fuel pressure problem. It is possible that the connector on top of the fuel pump assembly has a burned terminal. This would cause low fuel pressure because of the high resistance in the fuel pump power feed circuit. That would explain the hard starting, but not the poor economy. Suggest having fuel pressure checked. Should be at least 55 PSI. Even 2-3 lbs. less can cause this concern.This 5.3 engine is also known for the intake manifold gaskets leaking vacuum. This causes a hard start and also high idle in cold ambient temperatures, as well as hesitation off idle and unstable idle when engine hot.I would also check those Autolite plugs since they have been in ther for about 30k miles. Have seen many times non AC Delco plugs cause odd problems.

2001 Oldsmobile Intrique A.I.R. Code P0410

2009-05-20T19:12:00.002-05:00

question = i have an 3.5 intrigue with secondary air injection issue. I get the p0410 code. OK this is what i tested. Fuse for air pump is good. New relay for air pump. Checked all vacuum lines to the two air diverter valves they good. There is vacuum at solenoid switch from throttle body but no vacuum after solenoid switch.i did jump out air pump relay and it did turn on pump. But doesn't seem to be turning on vacuum solenoid to diverter valves and also not turning on relay to air pump. I hooked up a vacuum pump to valves directly and they also did not hold vacuum. Checked all vacuum lines and they are right and not broken. Car has 95,000. Thanks.

JK:Thank you for the tip / donation.OK. A few things.Be sure to check the fuse for the air valve solenoid. It is in the under hood fuse block. 10amp, labeled ENG EMIS.I will send a schematic in a few minutes to go along with the info given here. That fuse is hot with key on or engine running. Check for power at pink wire at solenoid after checking fuse. The problem with not using a scanner to turn the entire system on, is that there are 2 separate circuits to the system. Just jumping the pump relay does not turn on the air solenoid. You would have to ground the ground side of the solenoid to activate it. Common cause and tests for P0410 Oldsmobile Aurora and Intrique. Again, they should hold vacuum with a pump

2001 Buick LeSabre Passenger Side Blows Cold When Heater On

2009-05-15T12:04:00.004-05:00

2001 buick lesabre right side heat vents blowing a/c cold air when controlls are set on heat, i unplugged the pass side controll switch same thing happening .

2001 Buick lesabre ltd
Engine: 3.8 series 2
i have unplugged pass side controll switch that did not help.

GM Tech JK:
This sounds like a pretty common problem with what is called the "Passenger temperature door actuator"
It is an electric motor that controls the passenger side air temp as indicated by the control knob.
When they fail, this is the condition you get.
You can try this recalibrate procedure...
Diconnect battery cable.
Wait 2 minutes.
Reconnect battery.
Turn the car on and do not touch the heater- A/C controls.
Let car run for 5 minutes.
Turn car off. Wait 1 minute.
Start car and check for proper operation.
If this does not work, the motor would need to be replaced.
If it does work, it may last for quite some time, or act up again soon. Hard to say. they are always different.

Chevy Venture Van Taillights Problems

2009-05-10T10:55:00.001-05:00

Untitled Page

Chevrolet Venture Van ABS Light On Dash

2009-05-08T22:52:00.006-05:00

Problem with my 2004 Chevy Venture
Engine size = 4.3
dash lights = ABS
tech = JK
question = I was driving my van for about 5 blocks. While I was pulling into a parking space, the ABS light came on at the exact time I felt my van start to fight me. I had my foot on the gas pedal and the van almost came to a complete stop (similar to as if I was breaking). Why does my abs light come on

JK: An ABS light coming on when turning is usually the sign of a front wheel speed sensor problem, or one of the harnesses going to each. This will usually not cause the problem of the van fighting you and hard to keep it moving. If this van is all-wheel drive, then this could happen. In that case, yoiu may have a problem an ABS sensor or harness, or a problem in the rear drive unit. Either way, the system would have to be scanned for trouble codes in order to find out what system has a problem, and begin diag. of the system.

2010 Chevy Camaro Recall

2009-05-07T09:26:00.002-05:00

GM is already recalling 300, 2010 Chevy Camaros.

Positive basttery cable may rub on starter and cause a short.

Car might stall, or fail to start.

GM Dealers

2009-05-07T08:45:00.000-05:00

General Motors Corporation ( GM ) soon to announce

it will close approx. 2,600 Dealers.

2007 Chevrolet Cobalt Power Steering Problem

2009-05-05T22:35:00.000-05:00

2007 Chevy Cobalt Mileage 31,000 Engine size 4 cyl dash lights- power steering

Question = I have no power steering sometimes on my 2007 cobalt withthe electric steering. The power steering warning meassage comes on also.What can the problem be.

JK:The conditions you have with the electric power steering not working sometimes, and the power steering warning on the driver info center may be related to a service bulletin. There is a bulletin that depending on what code has been set in the power steering control module, that calls for the replacement of the steering column assembly. There is an in internal failure. Your car is still under factory warranty, so make an appointment with any GM dealer. The repair will take approx. 2 hours if the part is in stock.

2004 Chevy Cavalier ABS and TRAC OFF Light

2009-05-03T23:35:00.000-05:00

Problem with my 2004 Chevy Cavalier LSMileage = 56000

Engine size = 4 cyliinder

dash lights = service w/ wrench, ABS, No Traction codes = no codes

work done prior = Brake pads replaced over a year ago

tech = kk

question = My service, ABS and No trac lights are all coming onintermittently, but at the same time. They go off when I turn off the car andrestart it. They come on when I am in the middle of driving orsometimes when I put it into reverse and back in to drive. There is also anoise when I make left hand turns.

KK:The light with the wrench is the "Service Vehicle" light. These lights are most likely all related. Sounds as if you have a problem in the ABS system. A problem in the ABS will cause the ABS light to come on, traction control system will be disabled, and the service vehicle light will come on. The ABS computer will have to scanned for codes. By what you describe, most likely have a front wheel speed sensor problem, or the harness going to one of the front speed sensors has a broken wire inside the insulation, or full of water.

1998 Buick LeSabre Overheating No sign of Leaks

2009-05-03T23:26:00.000-05:00

Vehicle make/model 1998 buick/lesabreMileage 87,000Engine size 3.8
question = my car never ran hot or gave me any problems one day itstarted riding funny so i pulled over and turned the car off when i liftedup the hood it was no water in it and there was no sign ofleakage(water was in it a couple days prior).I put water in it, but then itwouldn't crank. Please tell me what could this possibly be??

KK: The conditions you are describing are tell-tale signs that the "Upper intake manifold plenum" has failed internally. When this happens, coolant fills the lower intake manifold and cylinders. This causes what is called a hydrostatic lock and the engine wont crank over.The upper plenum and gaskets will need to be replaced, as well as the spark plugs, and the cylinders will need to be cleaned out.

Cash for Clunkers Help U.S. Economy ?

2009-05-01T20:35:00.000-05:00

THINK AGAIN !

Just read an article about how the Cash for Clunkers program affected

car makers bottom lines this quarter.

Honda, Toyota, Hyundai and other foreign car makers show large sales

increases this quarter- mostly due to this program.

General Motors, and Chrysler showed recond drops in total car sales

compared to last quarter. Ford was the only U.S. car maker that

showed an increase, as small as it was.

From a personal perspective, I noticed a LOT of Clunked cars in the back

parking lot of a local Nissan dealer in my area. The vast majority were

Chevy trucks, cars, Pontiacs, Buicks, Oldsmobiles, Ford cars and trucks.

Had to stop and count...

97 U.S. made cars and trucks ready to be junked. Many were in nice shape.

So, 97 GM, Ford cars and trucks traded in (JUNKED) for the

purchase of new Nissan's.

That means 97 less vehicles in my area that may

need a little work or regular maintenance.

97 owners switch from domestic to foreign.

97 vehicles purchased that are not U.S. made.

Some people say "Ya, but they are made right here the good ol' USA"

Many are, but where do the profits go ? Sure the factory employees that build them

are spending their money on houses, funiture, going out to eat, etc, as normal.

So I quess those comunities are doing OK. Although, comunities around these

factories always do. Again, where is all the profit going.? Do you think the guy on

the assembly line that installs seatbelts got a huge bonus this quarter ?

I THINK NOT.

Chevy Cobalt Check Engine Light Code P0300 P0171

2009-05-01T10:59:00.003-05:00

I have a check engine light on my 2007 Chevrolet Cobalt 2.4l engine. Had the codes scanned and they found P0171 and P0300. Lean exhaust condition and misfires. What can cause this problem and how do i fix it myself. I dont want to go to a shop since they are so expensive these days and I have a small budget.

JK:
This problem should under warranty. It is common to 2006 and 2008 models also. A common cause for this is the fuel injectors are slightly restricted. The dealer will perform a fuel injector balance test and do a cleaning procedure. If the injectors do not show improved flow, they will be replaced. There is also a reprogram for the Powertrain Control Module (PCM). Suggest getting in as soon as you can. With the check engine light on,l you will not be able to pass state emissions test, and can cause more problems with the way the car runs.

2004 Chevrolet Trailblazer Check Engine Light P0455

2009-04-30T01:12:00.007-05:00

2004 chevy trailblazer
Mileage = 46000
Engine size = 6 cyl
dash lights = yescodes = p0455
question = what should i be looking for when code p0455 comesup....evaporative emission control system leak detected (gross leak)

JK:
Code p0455 is a large EVAP leak. A common cause for this is a loose or faulty gas cap. Or if the truck was running when you were filling it with gas, this can also cause this code.
Another common cause is a faulty / sticking EVAP vent solenoid / valve. If the vent valve does not operate, the system will not seal when it needs to, thus causing a large leak. A simple test with a test light and a scanner that can turn the vent solenoid on and off would need to be done to test the valve.

2004 Chevy Trailblazer Code P0455

2009-04-30T01:07:00.003-05:00

2004 chevy trailblazer

Mileage = 46000

Engine size = 6 cyl

dash lights = yescodes = what should i be looking for when code p0455 comes up evaporative emission control system leak detected (gross leak)

JK:

Code p0455 is a large EVAP leak. A common cause for this is a loose or faulty gas cap. Or if the truck was running when you were filling it with gas, this can also cause this code.

Another common cause is a faulty / sticking EVAP vent solenoid / valve. If the vent valve does not operate, the system will not seal when it needs to, thus causing a large leak. A simple test with a test light and a scanner that can turn the vent solenoid on and off would need to be done to test the valve.

2003 Chevrolet Malibu Theft Security Problem Repair

2009-04-28T23:04:00.004-05:00

Problem with my 2003 Chevy Malibu
Mileage = 100000
Engine size = 3.4
Ignition will not turn, acts like it is stuck Chevy Malibu 2003

JK:Sounds like the ignition lock cylinder is bad and needs to be replaced. The cylinder is also the sensor for the security system.You could try to spray a little WD-40 in the cylinder, and work the key in and out, turn it back and forth. Sometimes that will free up the cylinder, but it will still need to be replaced. Then the theft re-learn procedure will need to be done.

Theft / Security Light
The security system on todays cars and trucks prevents the vehicle from being stolen. There are many variations of the system going back to the early 1990's.This warning could be on when the engine is running, indicating a fault has been detected in the system. If left unrepaired, there is a good posiblity that the car will eventually not start.There are several different possibilities for the cause of the warning, depending on the make / model / year of the vehicle. Anything from a bad ignition cylinder wire, to a bad cylinder to a dad Body Control Module (BCM).After market (non-factory) alarm and remote start systems can cause havoc with the factory theft system, causing this warning light, or a no start.

Pontiac Goes The Way Of Oldsmobile

2009-04-27T22:44:00.000-05:00

Remember when the same thing that is going to happen to Pontiac, happened to me at Oldsmobile. The main reason Oldsmobile was dropped, was to save Saturn. After all, Oldsmobile was making a profit, Saturn was loosing 1-2 billion, so why not get rid of Oldsmobile. I guess this forward thinking is why I am not a CEO. Oh yea, Saturn is still loosing money !

Pontiac is no more.

2009-04-27T10:52:00.000-05:00

It is official.

Pontiac is being phased out.

A sad day for our industry and it's labor force.

Chevy Malibu Airbag Theft and Service Engine soon Light

2009-04-25T01:18:00.006-05:00

Problem with my 2003 4 door Malibu
Engine size = 3.1 liters 6 V
Airbag brake theft system seat belt and servie engin soon
Repair work done prior = Had the heater core and blower moter replaced 12-19-09 this all started a week later
question = When I start my car all of these dash lights come on airbag brake theft system seat belt and servie engin soon, My gas gage reads empty and does not show how much fuel I have and the temp gage does not move either. its started doing this intermitanly however its been constant for the 3 weeks also my automatic lights do not work I have to turn my headlights on and off the auto switch for them does not work and the trunk release button does not work. It will not pass emission testing so I can not get it reliscensed however it passed safty inspection that shop would not look into the problem. Please help I have no Idea how to fix this or how much it will cost Thanks.

JK:
Seeing as this started after the heater core replacement, i would suspect they pinched a wirng harness somewhere in the dash, or left a ground wires loose. There are any ground wires around under the drivers side of the dash. If one was left off, or loose, it could cause all the problems.
All of these things can be related to the Body Control Module (BCM) or a harness for the BCM. That is except the check engine light. That most likely is not related, unless a main ground as stated ubove.
I would definetly have the shop that did the repairs look at it. A good shop would.
Really need to have all the computers scanned, and look through many schematics to find a ground or harness in common to all the fault codes that would be stored in the different computers.
You could also go under the passenger side of the dash and unplugg the BCM, then plug it back in to see if just a loose connection. They may have also bent some wire terminals in the BCM or any other conectors.

GM CAR AND TRUCK AUTO REPAIR HELP EXPERT MECHANICS: 2006 Chevrolet Impala Service Tire Monitor System

2009-04-24T17:40:00.000-05:00

More Equinox repair Help

Oil Leak and Engine Knock After Oil Change 2007 Cobalt

2009-04-22T15:32:00.001-05:00

Had another failed engine after the customer was at a local

Quick Oil change facility. This time it was a 2007

Chevrolet Cobalt 4 cylinder.

The common thing that happens is that one of the O' rings

on the oil filteror oil filter housing cap gets ripped,

misaligned, or the wrong filter is installed.

With the O' ring problem, oil leaks out very quickly

since it is under full pressure.

By the time the owner of the car notices it, it may be too late.

Major internal engine failure will occur if not noticed in time.

2009-04-17T19:24:00.000-05:00

General Motors MAY

Drop the GMC and Pontiac brands.

That is a shame,

although GM has too many trucks considering Chevy.

2006 Chevrolet Impala Service Tire Monitor System

2009-04-14T22:57:00.000-05:00

Problem with my 2006 chevy impala
Mileage = 34,000
Engine size = v6
dash lights = service tire pressure monitor system
Why does my service tire presure monitor light keeps coming on mydash. I checked the tire pressures, and they all show dashes. What can i doto reset the light. Is this something i have to go to the dealer for?

A common cause for this, and for possible problems with your remotes, is a problem with the remote control door lock receiver(RCDLR) There is a service bulletin for these conditions that has the technician replace the module, antenna, program the module, and the tire monitor system. This procedure will correct all other these problems. Since you are under 36k miles on an 06, this repair will be under warranty. Just make an appointment with your nearest dealer.
I will send along the service bulletin so can have it with you.
More Info

2005 Cobalt Check Engine Light

2009-04-10T14:03:00.002-05:00

SES on 2006 Chevy Cobalt

Mileage = 37,000

Engine size = 2.2 L 4 cylinder

dash lights = SES check engine light.

GM tech = jk

question = The check engine light is on in my 2005 Chevrolet Cobalt 4 cylinder. Is this something to worry about. The car runs just fine and starts good. Any damage if keep driving like this. I am out of work and really cant take to a shop to tell me what is wrong, then sell me a bunch of parts and service.

Thanks for any help.

JK:Any time a check engine ( SES ) light comes on the dash, the computer system is seeing a problem in one of the emissions or other systems. When the light comes on, a 'Trouble code' is stored in memory. Even if the light goes out, the code is still in the PCM (Powertrain Control Module).There are many, many things that cause this light. The first step is to have the system scanned for codes with a code reader. This can be done for free at many of the large national parts store chains. Then diagnostics of the system needs to be performed. Just because a code is related to a particular sensor, does not mean that senor is faulty. Many things can cause codes to be set for a sensor or system that is not related to the codes set. Example: an oxygen sensor codes does not necessarily mean the oxygen sensor is bad. The problem could be with another sensor, misfires, vacuum leak, fuel quality, etc.

2006 Chevrolet Impala coolant leak

2009-04-08T15:55:00.000-05:00

Replaced an other set of head gaskets.

Common problem of antifreeze loss and leak on Impala 3.5 or 3.9 L
V6 engine is the rear cylinder head gasket.

We replace both head gaskets.

These have all been under warranty.

2007 Pontiac Torrent

2009-04-07T23:59:00.001-05:00

Dead battery on 2007 Pontiac Torrent.

If this crossover is jumpstarted incorrectly, it will

casue the main 80 amp fuse in the fuse box to blow.

This will cause no power steering, "service stability system" warning on the dash. As well as many other warning lights.

A test light is needed to check the fuses. After replacement,

the stored OBDII trouble codes will need to be erased

from the computers (modules).

Fuse Location Pictures

Chevy Equinox electrical Problems

2009-04-02T15:24:00.000-05:00

Yet another 2006 Chevy Equinox came in

with the complaint of no powers steering. Also the Service traction,

Service stabilitrack, ABS and other warning lights on the dash.

People are not jump starting these vehicles properly. This casues

the Main 80 amp Maxi fuse in the ubderhood fuse block to blow.

There will be many trouble codes set in many of the different computers.

Sometimes the power steering control module is also damaged, or

even the Powertrain coontrol module (PCM)

2006 Chevy Equinox water on the floor carpet

2009-03-18T22:09:00.000-05:00

Repaired a water leak in a 2006 Equinox. The spare tire well was full of water as was the carpet all the way to the front seats.
Found the rear gate weatherstrip leaking. It filled up the spare tire well so high that it spilled over on the rear carpet under the rear seat.
Had to replace the seal and remove the entire interior to get the cdarpet out. Let the carpet dry, and then re-installed everything.

2006 Chevy Malibu clunk in steering

2009-03-09T23:30:00.000-05:00

Replaced another intermediate steering shaft on a 2006 Chevy Malibu to correct a clunk in the steering and the front end when turning or braking. There have been several Technical service Bulletins ( TSB ) over the years for GM cars and trucks. I think they finally got this part to last and fix this problem.

GM files bankruptcy

2009-03-05T08:33:00.000-06:00

What happens if General Motors files for bankrupcy ?
Well, I guess us technicians will have more time to help answer your
automotive repair questions.

Ask a Mechanic Online to Save Money

2009-02-07T01:49:00.001-06:00

With the tough economic times we are all in, it would make sense to be able to ask a GM mechanic a car repair question.
Questions like " why does my ", "how do i", " why does this light come on ",
" problem with my ".
These are all types of question the GM tech's at GreatAutoHelp.com answer every day for free.
Come visit us for all your auto repair questions and answers.
With the average Dealer diagnostic fee at about $125 per hour, you can save alot of money asking a mechanic online to help fix your car for so much less than a dealer or auto repair shop.

WHO WE ARE

2009-01-20T20:20:00.000-06:00

We are 4 GM dealer technicians

offering help, advice, how-to auto repair.

We specialize in GM vehicles only.

Chevrolet, Pontiac, Buick, Cadillac, Oldsmobile.

Our main site is GreatAutoHelp.com

We have picture, videos,

step-by-step instructions on GM auto repair.

Many hints and tricks to help you repair your vehicles problem.

Or maybe you just want to know how something works,

where something is located.

Click on the MAIN PAGE LINKS to the right for some

Great FREE Information >>>

------------

Or a little further down on the right

click on some of the sample questions and answers

our expert Technicians have answered

HOW DOES IT WORK ?

2009-01-20T20:18:00.000-06:00

Ever wonder how a particular system in your GM vehicle works?

Visit our Free Knowledgebase

for information on many different vehicle systems.

From basic engine operation, anti-lock brakes (ABS),

airbags (SIR), power steering systems,

to fuel injection and more.

We are always adding detailed information

and systems explanations.

ENGINE DATA SENSOR LOCATIONS

2009-01-20T20:16:00.001-06:00

Need to know where a particular engine sensor is located on your GM engine?

We show you pictures, locations, and descriptions

for many different engine sizes.

From 2.2L 4 cylinders, 3.1 / 3.4 L V6, to v8.

Click the link below for more free info.

GM Engine Sensor Locations and Descriptions

CHECK ENGINE / SERVICE ENGINE SOON LIGHT

2009-01-20T20:12:00.001-06:00

Check Engine / Service Engine Soon.

Todays GM vehicles use many sensor, switches, solenoids, and other electrical components to control or monitor every aspect of the engine.From controlling the fuel and ignition systems, to monitoring the emissions.A problem in any of these systems, or subsystems, can cause the check engine light to come on.The first step in any diagnosis of the check engine light is to get the computer (PCM or ECM) scanned for codes. Any time this warning comes on, a code is stored in the computer memory along with many data parameters that were present at the time of the fault.A simple code reader that can be purchased at any automotive supplier can retrieve these codes. Many of the large national parts store chains will scan the system at no charge. The code will give an indication as to what system has / had a problem. The more expensive scanners will also show live data, and allow further diagnosis by being able to control parts of a particular system.

More GM warning indicator light descriptions.