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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for December 11, 2009
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Open Help Requests for GM
Help Request Answers
1997 Chevrolet Cavalier 2.2L Stall VIN: 1G1JC1245V
Car came from another shop. It has no real pattern. It will stall out at cruise speeds, or sitting and idling in the lot. Has always restarted but once and by the time I hooked up a spark tester it started. Another shop has replaced crank sensor, ign. mod., fu...
2000 Chevrolet Suburban 1500 LT 5.3L Hesitation, Cuts out, Stall VIN: 3GNEC16TXY
HELP, three days after converter replacement cust returns complaining of severe hesitation on hard acceleration. full throttle take-off motor pops back, and stumbles and fall flat on its face. sometimes even stalls. 3/4 throttle take-off vehicle pulles hard an... Trouble codes: P1571 (tcs pwm circiut no signal. will not set mil.)
2000 Chevrolet Silverado 1500 5.3L Vibration upon braking VIN: 2GCEC19T9Y
VIBRATIONS ONLY UPON BRAKING, especially noticable at or above 40 MPH and gets more severe after 4 or 5 miles from cold start. Problem developed gradually over about 4 weeks. Dial indicator and on-car brake lathe reveal near zero runout on all rotors, front wh...
2002 Chevrolet Trailblazer LTZ 4.2L heated seats VIN: 1GNDT13S22
Checking the drivers heated seat showed no lights on the control switch and no heat from the seat. Turning the passenger heated seat on showed normal lights on the conrols and correct operation of the heated seat but at the same time the drivers seat heaters t...
2005 Chevrolet Silverado 1500 5.3L Hours Counter VIN: 2GCEK13TX5
Customer states that vehicle hours do not match mileage of vehicle, verified that hours are 274 & miles shown are 61,906 which cannot be, is there anyway hours could have been reset?
1994 GMC C1500 Sierra SL 5.7L No Start, hard start cold VIN: 1GTEC19K7R
This is the most frustrating of all things. It belongs to me. I bought this truck from the original owner last year. He has complained about hard start cold for sevseral years now only we could not duplicate because after it starts it will all day long. Proble...
1997 GMC Jimmy SLT 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GKDT13W1V
thanks in advance for any and all help. I have a 4.3 in here giving me fits. It has a miss on cylinder 4 at idle that goes away above 1500 rpm. On a cold start it will run fine for the first 2-3 minutes then starts missing on #4. I have checked spark which is ... Trouble codes: P0304
1999 Saturn SL1 1.9L Misfire VIN: 1G8ZF5281X
i started on this saturn due to large oil consumption and drivabilty issue, ( random miss ) i rebuilt the head found that all of the valve guide seals were just about gone, and after installing it getting new plugs and wires and even a new ignition coil for th...

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Rendezvous CXL 3.4L Warning Indicator VIN: 3G5DB03E12
This one is gone! There were many replies that had nothing to do with this message. Several posters assumed it was an oil change indicator, or a light out somewhere on the vehicle. Just a note for future posters, this does NOT have a warning for lights that...
2004 Buick Rendezvous CX 3.4L cruise control VIN: 3G5DA03E74
As always thanks for the wonderful response, quick & proper. We had to wait for the customer to bring back in. We checked and replaced all driverside bulbs they worked but all, especially the rear were very black, also tested the battery at different times in ...
1998 Cadillac Eldorado ESC 4.6L Wipers VIN: 1G6EL12Y8W
Well, thanks for all the replies. We were unable to come up with a fix for this vehichle. I hate it when the vehichle outsmarts me. David
2000 Cadillac DeVille 4.6L tcc VIN: 1G6KD54YOY
Lots of replies with various remedies. The common recommendations are to replace the torque converter, turbine shaft seals, channel plate seals, TCC solenoid. I had to swallow my pride on this one and sent it off to a reputable trans shop. This is more work th...
1986 Chevrolet Caprice 4.3L runs poorly VIN: 1G1BN69Z6G
Boy, you guys are as helpful as can be. I really appreciateall the support. I had already replaced MAP vacuum hose. I wentahead and tossed a distributor and cap on as my last attempt before going deep. It didnt change at all, so I went ahead and pulled the int...
1996 GMC K1500 Sierra SLT 5.7L No Start VIN: 1GTEK19RXT
Hey guys sorry about the delay. I wanted to wait a few weeks and make sure the truck was right before I closed w/ the fix. We replaced the PCM with a used one and it actually was better. About a week and a half after it left the shop the customer called again ...
1994 Pontiac Grand Prix SE 3.1L starter/ flywheel VIN: 1G2WJ52M8R
I ended up wiring in a relay to the starter. Problem solved. When she came to pick up the car she did mention the post to the fuse box from the battery lead would get hot when running the lights and other accessories and that she would have to replace the bat...
1995 Pontiac Firebird Trans Am 5.7L Poor Idle Quality, Misfire VIN: 2G2FV22PXS
many of the replies mentioned the injectors which i had already checked with ohms, load amps and flow. i did fix some of his problems but with the fire and incorrect wire harness there was almost no limit to the dollars that may have been needed, the custome...
2003 Saturn L200 2.2L Hesitation, Misfire, Poor Fuel Economy, MIL Lamp on VIN: 1G8JU54F73
I changed the cat out, it drives and shifts good. Everything tests good the o2's are reading normal. My hesitations is gone. No misfires at high loads. Trouble codes: P0300, P0420, P0172.
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