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Prev Professional Automotive Repair Technical Discussions for July 27, 2009
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Open Help Requests for GM
Help Request Answers
1989 Cadillac Allante 4.5L high idle VIN: 1G6VR3180K
Thanks in advance for reading this. I apologize for the lack of test results. I'm just throwing this out there hoping to get some advice on where to start on this car or maybe if someone knows of some common problems on these caddy's. He states that while driv...
2009 Cadillac Escalade 6.2L Starting VIN: 1GYFC26229
I have this 09 Escalade, 2008 Suburban and 2007 Tahoe with the same intermittent "no crank" problem. Engine will NOT spin over according to customers. 2 customers said the problem acts like a dead battery, we get the vehicle here and it starts. We installed ne...
1982 Chevrolet Corvette 5.7L Poor Idle Quality, Misfire VIN: 1G1AY8784C
customer came in and said that vehicle would die after started and did not do it every time. i started the vehicle and the idle was at 1300rpm they set the timing at 25 degrees btdc and the idle plug was removed and set up. i set everything back to spec know t...
1996 Chevrolet K1500 5.7L Misfire VIN: 1GCEK14R8T
Good afternoon, I have what may be a stupid question but how do you go about verifing a bad injector assy on this Vortec? I have never had to replace one so I want to be sure it is bad. The truck has high misfire counts on cyl 3 and 5. Has some on cyl 6 but ju... Trouble codes: P0134 (p0135-), P0135 (p0137-), P0137 (p0300-), P0300 (p0420-), P0420 (testing and results)
2001 Chevrolet Silverado 2500 HD 6.6L engine VIN: 1GCHK23191
the truck arrived to me without any codes, the customers complaint was that the truck just turned its self off after driving for several miles ((80). the fuel regulator was replaced as well as a pair of rubber fuel lines located above the engine. after i perso...
2001 Chevrolet Silverado 2500 HD 8.1L Engine VIN: 1GCHC29G81
hi, GM or Chevy Techs, I need your help and suggestions for this Silverado LS C2500 Vortec 8.1L engine. This vehicle is making a knocking or rattling sound when cold start, engine oil level is ok and it runs fine when warmed up. There's a TSB for the 6.0L engi...
2002 Chevrolet Express 2500 LS 5.7L MIL Lamp on VIN: 1GAGG25R42
this is not a help request this is informative only. this van came to us with intermittent p0200 code and after hours of research I was unable to find any real help to this problem. I dove into the wire harness and located a rubbed through section of wire wher... Trouble codes: P0200
2002 Chevrolet Malibu 3.1L Excessive Emissions, Poor Idle Quality, Cuts out, Stall VIN: 1G1ND52J33
Thanks in advance guys. Ive got this malibu in here that is throwing me for a loop. This car will die at random then run rough pop back thru the intake and die,Ive noticed on the scan tool the timing going from 12-32 deg. of timing @ idle and bounces around, I...
2005 Chevrolet Aveo LS 1.6L warning light VIN: KL1TD52695
This car has a intermittent problem with the charge light coming on. The battery has never gone down because it only has happened 4 or 5 times in the past week. When it is on it is only on for a few minutes at the most and sometimes for just 5 or 10 seconds. T...
2005 Chevrolet Corvette 6.0L Starting VIN: 1G1YY24U55
This 2005 Corvette has keyless push button starting. The starter will not engage. 1. The information center does NOT display the "no key fob" message when attempting to start. I did verify by removing the key from the vehicle at which time I did get the "no ...
2005 GMC C4500 Topkick C4E042 6.6L Low Power VIN: 1GDE4E3285
This Duramax deisel engine idles at 1100 rpm and will not accelerate over 2200 rpm. when the brake is applied to shift into gear the adle drops to normal 600. no codes are stored. all sensors are within spec. the only test it fails is the low pressure side of ...
2005 GMC Yukon Denali XL 6.0L Unknown VIN: 1GKFK66U75
2005 yukon denali whistle sound from vents with a/c on doesnt matter what the fan speed or the temp is set to. when the sound occurs it will only last for about 5 to ten seconds no real repair related history we replaced the a/c compressor and reciever dryer a...
1991 Oldsmobile Cutlass Supreme 3.1L No Start VIN: 1G3WH14T8M
hey guys, i am pulling my hair out on this one. 1991 olds cutlass supreme w/ 3.1l . vehicle would stall after being driven for 10 minutes or so.(sometimes longer) would ususally restart after about 5 minutes. while testing i noticed fuel pressure was low so i ...
1996 Oldsmobile Achieva SL 3.1L Anti-theft VIN: 1G3NL52M6T
I asm looking for a re-builder or supplier of the IPC for this wonderous work and marvel. Originally the customer stated they had to perform the security relearn and it was becoming more frequent over the last year- from every other month to monthly, to weekly...
2002 Pontiac Grand Am SE 2.2L No Start VIN: 1G2NF12F52
hey guys, have a problem with a 2002 pontiac grand am w/2.2l ecotec engine. owner towed vehicle to shop for a no start condition. it seems he purchased the vehicle with a blown engine. he then purchased a used engine with 50000 miles from an individual. he in...
2003 Saturn L200 2.2L Transmission shifting VIN: 1G8J75N893
Need help from the Saturn gurus! What I have here is a 03 Saturn that when your driving down the road and floor the accelerator it will not shift until I let off the pedal some! It was diagnose as a internal transmission problem, so we replaced it. After test ...

Fixes & Summaries for GM
Fix/Summary Answers
1993 Chevrolet Camaro Indianapolis 500 Pace Car 5.7L Electronic VIN: 2GIFP22P6P
Hi ,guys , thanks for help , The problem vas the ECM .I recharge and steel had same problem . Kept troing code 66. (low pressure) .Diskonekt ac compressor and biapast , then vas working fine.I did complite test from Alldata and anded up with bad ECM .
1994 Chevrolet Camaro Z28 5.7L Interior VIN: 2G1FP22PXR
i would like to thank everyone who helped found out if you jar console it would blow fuse orange wire was touching parking brake assy thanks again jimmy
2003 Chevrolet Suburban 1500 LS 5.3L Radio VIN: 3GNFK16Z93
Thanks for all the replies. The noise in the speakers went away by itself before I could do further testing. The customer has now said that this has been coming and going for a while, just takes the right bump. Most replies were to replace the antenna and lead...
2007 Chevrolet Malibu LS 2.2L Misfire VIN: 1G1ZS57F37
The problem was some pretty nasty looking water in the fuel. This is a returnless fuel system and when a slug of water got into the fuel rail it all floated to #4 on a left hand turn and #1 on a right hand turn. This is Arizona - it's 114 degrees today and we ... Trouble codes: P0300 (random missfire).
1999 GMC Jimmy SL 4.3L Number 4 cyl VIN: 1GKDT13W3X
The customer did not want to proceed with the repairs. The customer is going to try to repair it himself. If he does bring it back I will update all with the fix. Thanks for your help!
1995 Pontiac Grand Am SE 2.3L tachometer VIN: 1NL48JFF89
ok its fixed, first i tried another instrument cluster since i was getting a signal, the tach would move slightly with new cluster, went ahead and double checked white wire from pcm and installed new pcm, tachometer started working normally I then checked the ...
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