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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for January 21, 2015
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Open Help Requests for GM
Help Request Answers
2001 Cadillac DeVille 4.6L Misfire VIN: 1G6KD54Y21
Thank all you Techs in advance. Customer complaint is misfire under acceleration during cruise. Confirmed complaint, cylinders 3 and 5 are worst offenders, but all will misfire sometimes worst then others. tried a new coil pack on rear bank (cyls 1357) and rep... Trouble codes: P0300
2007 Pontiac Grand Prix 3.8L No Start, Stall, No crank VIN: 2G2WP55217
Hello fellow techs and thanks for taking the time to read my posting. Two weeks ago this car was towed in with a no crank no start condition. At that time it had a code for loss of signal from the chip in the key. I replaced the tumbler and pickup module and i...

Fixes & Summaries for GM
Fix/Summary Answers
2003 Buick Century Custom 3.1L ac temps VIN: 2G4WS52J83
thankyou everyone for your input, I have already evac and recharged last fall, pressures are always good, have not seen any icing up, customer states that both zones inside car react equally when acting up, since it has dual temp door actuators then that is in...
2003 Chevrolet Cavalier 2.2L instrument cluster VIN: 3G1JC12F33
BIG THANKS to all who helped. As most of you said the instrument panel (IPC) was the bad boy. We did not do a proper pin check because of intermittent condition. All is well now .
2008 Chevrolet Silverado 1500 WT 5.3L Tpms VIN: 1GCEK19008
Truck has not returned, thus it is not fixed. Thank you to the friendly folks who offered help. Among the replies were recommendations on possible cluster issues and/or drive cycle procedures. Performing a relearn per Alldata. Checking the spec programmed int...
2008 Chevrolet Cobalt LT 2.2L MIL Lamp on VIN: 1G1AL58FX8
Thanks to all that replied. Common sense wins out in the end, the car is great, passes all monitors, etc. I must have some kind of comm problem in vehicle specific mode. That's all for now, Steve Trouble codes: P0128 (Engine coolant temp).
2002 Saturn LW300 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G8JW84R62
Thank you everyone for your responses. A set of injectors fixed this vehicle. I checked fuel trims and found bank 2 was negative and bank 1 positive at idle. Pulled the plenum and performed an injector balance test and #4 injector dropped more pressure than th... Trouble codes: P0304 (Cylinder 4 Misfire Detected).
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