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Prev Professional Automotive Repair Technical Discussions for March 31, 2007
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Open Help Requests for GM
Help Request Answers
1989 Cadillac Eldorado 4.5L Poor Fuel Economy VIN: 1G6EL1159K
Car came in sucking fuel. Checked computer, no RPM and CTS was -40, no MAP, BAP or TPS change at all and Battry volts are 3.44. Tested CTS. Sensor was fine so I shorted signal to ecm. Still -40. Probed CTS readings at ECM. Good readings so I replaced computer ...
2002 Cadillac Escalade 6.0L Heating temperature VIN: 3GYEK63N02
Thanks in advance for any help on this one. The heater temperature door actuator is not receiving the variable voltage signal from the control unit. We have check all signals from control unit to actuater. We've check resistance of return wire from actuator to...
1991 Chevrolet C1500 Cheyenne 5.7L Cab to frame bracket VIN: 1GCDC14KOM
This is my personal truck I drive everyday. I noticed a thumping sound when I drive over rough roads and I checked the underside and noticed that both rear cab brackets were rusted out. The rubber bushings will move up and down about 2 inches when I lift up on...
1994 Chevrolet S10 4.3L Excessive Emissions, Poor Idle Quality, Surge, MIL Lamp on, Runs Real Lean VIN: 1GCCS14Z5R
First of all thanks in advance for any and all help. This vehicle has me stumped because it will be running fine and then all of sudden start to loose some power. The idle will start to idle rough and then start to surge badly from 300 to 1200 rpm. I noticed t...
1998 Chevrolet Cavalier LS 2.4L pedel VIN: 1G1JF52T1W
Good evening to all I have this 1998 chevy cavalier that has a VERY hard brake pedel.I have checked all base brake system parts all ok.I had to replace rear drums due to severe rust also cleaned and adjusted rear shoes.Found right front caliper hose twisted fi...
1995 GMC Jimmy SL 4.3L Hesitation, Cuts out, Stall VIN: 1GKDT13W1S
Under light acceleration truck has no problems. After truck warms up when accelerator is snapped in or out of gear engine misses and stalls out. Knock sensor appears to be picking up a spark knock and retards the timing excessivly to the point it misses real b...
1995 Pontiac Sunfire SE 2.2L MIL Lamp on VIN: 1G2JB5247S
Vehcile has had a recuring egr code. 32 customer complained of surge, and miss that we could not duplicate. After multiple tests, egr valve, and sol where replaced. Egr flow was tested, no aparent blockage. On third attempt found that when scanner was attach... Trouble codes: 32 (egr)
2002 Pontiac Grand Am GT 3.4L Hesitation, Misfire VIN: 1G2NV52E22
Engine runs with miss under heavy load. Will not rev beyond approx. 4000rpm. Feels low on power at all times except initial throttle application. Will not shift/upshift properly when on throttle hard. Have replaced plugs, wires and module, shows some improveme...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Buick Park Avenue Ultra 3.8L oil pressure VIN: 1G4CU5414Y
Thanks to all that replied, and so quikly too. What I forgot to mention in my original posting is that the lifters I replaced in the vehicle were aftermarket lifters. This is what ended up being the problem. There were some minor differences in the after marke...
1998 Cadillac Seville SLS 4.6L oil pan VIN: 1G6KS54YXW
sorry it took me so long too get back too every one thanks a bunch too everyone who responded too my request as many of u said there is no easy way to do this job we lowered the motor and trans out through the bottom and then seperated it so we could put it on...
2003 Chevrolet Silverado 2500 HD 6.6L heated seats VIN: 1GCHK231X3
Good news everybody as the problem has been solved and we can congratulate ourselves in having such a tremendous tool in this network. I am going to attempt to show how much I appreciate your help by providing you with the account of this experience and in the...
2005 Chevrolet Impala 3.4L Misfire VIN: 2G1WF52E95
thanks to everyone who replied.the fix was the camshaft.after getting the tech line to allow me to remove camshaft found the exhaust lobe on that cylinder wiped out. the first roller cam i have ever seen wear out.well the new cam fixed my problem .again i than... Trouble codes: P0304.
2000 GMC Safari SL 4.3L Hesitation, Misfire VIN: 1GKEL19W7Y
I can't believe it, but it was cap and rotor. We had just put an Echlin one on in Dec. of 06. didn't think it would be bad so soon. Thanks Trouble codes: P0300.
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