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Prev Professional Automotive Repair Technical Discussions for August 16, 2013
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Open Help Requests for GM
Help Request Answers
2004 Cadillac SRX 3.6L Starter VIN: 1GYEE63754
We replaced the transmission and now we are experiencing a no crank condition. Also can't turn the key to the lock position. We charged the battery overnight and it started right up and the key goes to the lock position. We checked the battery and it checked g...
1999 Chevrolet K2500 5.7L MIL Lamp on
customer replaced fuel pump before we got involved. long term fuel trims 25% on both banks at idle. Smoked entire intake and found no leaks. Replaced maf twice, no change for better. Wondering if fuel pressure is too low or if injectors are starting to get res... Trouble codes: P0171 (lean bank 1), P0174 (lean bank2)
2004 Chevrolet Silverado 2500 HD 6.6L Injector Knock VIN: 1GCHK23194
Customer requested to replace all eight fuel injectors. The dealer told him he needed 4 (due to smoke)so he wanted all eight replaced. We found debris (slug?) in #4,6 & 8. After replacing the injectors and cleaning all the tubes and rails. The truck runs like ...
1990 GMC Jimmy 5.7L speedometer VIN: 1GKEV18K2L
Speedometer needle is stuck on 85mph & odometer does not work. scanned computer to find no codes but it reads MPH and seems accurate also. Checked fuses, all good, pulled gauge cluster out to test at connector. My All Data Pin tests and color of wires in the p...

Fixes & Summaries for GM
Fix/Summary Answers
2002 Buick Century Custom 3.1L Cuts out, Stall, Misfire VIN: 2G4WS52J82
Thank you all for your input on this issue. The technician who was working on this took a leave of absence after a death in his family. I am going to replace the engine control computer which is now failing,(the car is not drivable with a scan tool plugged in)...
2003 Cadillac DeVille 4.6L oil leak VIN: 1G6KD54Y53
Took every ones advice and put the problem in the customers hands. they decided to replaced the rear main seal and put the car back together. Depending on how bad the leak is after the fact they will decide to keep the car or trade it off. Thanks for all the h...
1991 Chevrolet Camaro RS 3.1L Poor Idle Quality, Hesitation, Stall VIN: 1G1FP23T9M
OK...i want to call this fixed, but i'll just called it diagnoised. DAVE FROM TEXAS was right on. Compression on drivers side was #2 60psi, #4 80psi, #6 90psi. Passenger side was better with #1 140psi, #3 150psi, and #5 140psi. I replaced the o2 sensor, and t... Trouble codes: 13 (02 Sensor).
2000 Chevrolet S10 2.2L No Start VIN: 1GCCS1458Y
I would like to thank everyone for the help. Checked out the ICM and sure as snot it was bad. Replaced that and went ahead and installed new coils for peace of mind. Runs like a champ. Trouble codes: P0336 (crank position sensor performance), P0341 (cam position sensor performance).
2008 Chevrolet Express 3500 6.6L Fuse #44 underhood fuse block. VIN: 1GBJG31668
While testing for the intermittent short, the faulty circuit went open. It was the line from the fuse to the TCM. I wired around it and put it back in service. No problems since. Thanks, Mark
1994 GMC C2500 Sierra SL 5.0L Poor Idle Quality, Misfire, Hard start VIN: 1GTFC24H9R
Replacing the Coolant temp sensor and pig tail seems to have taken care of the problem. The old sensor and pig tail did not show any signs of wear, and I was getting readings from the sensor throughout the warm up process, but decided to replace it anyway. Tha...
1997 GMC Yukon SLE 5.7L Misfire VIN: 1GKEC13R2V
Have not had a problem since I posted but as I stated earlier, the problem takes 11 to 12 weeks as a post repair. But if it happens again I will replace the dist with an OEM dist to include a cap, rotor and CKP. This was the assumption I was making to myself a... Trouble codes: 340 (cmp sensor).
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