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Prev Professional Automotive Repair Technical Discussions for July 18, 2012
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Open Help Requests for GM
Help Request Answers
1996 Chevrolet Impala SS 5.7L No Start, Stall VIN: 1G1BL52P9T
Fuel pressure at service port on rail is 20 psi.Fuel pressure on feed line(which is the bigger line) is 20 psi.When I disconnect line to test pressure fuel shoots out like a fire hose.Someone told me of a forum online that the pump wiring in fuel pump kit is b... Trouble codes: P0171, P0300, P0420, P1626
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1998 Chevrolet Tahoe LS 5.7L speedometer VIN: 1GNEK13R4W
Customer was complaining of transmission flare at 40mph or so interm. He didn't say he had any speedo issue. I road tested and verified trans flare around 3rd gear and OD I noticed at same time trans would flare I would loose speedo.(it would drop out) I hooke...
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2003 Chevrolet Trailblazer North Face 4.2L loss of power VIN: 1GNET16S13
i have an 03 trailblazer that i am stumped on. it has a big lack of power. idles perfectly smooth. i pulled the front o2 sensor and drove it with no change. then i second guessed myself and figured maybe that wasn't enough so i dropped the pipe from the manifo...
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2009 Chevrolet Colorado WT 3.7L Poor Idle Quality, Hesitation, Misfire, MIL Lamp on VIN: 1GCCS19E69
Scanned for codes and found p0300 randome cylinder misfie and after looking at misfire monitors found cylinder one was the issue,installed new spark plug, no change, switched coil with a good one, no change,have powers and ground,have injector pulse, fuel pres... Trouble codes: P0300 (Cylinder Misfire)
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2010 Chevrolet Suburban 1500 LT 5.3L buss system VIN: 1GNUKJE36A
Hello everyone and thanks for your help in advance. This Suburban is my boss's so Im pretty up to speed on the symptoms it has. About three weeks ago the vehicle wouldnt crank for his wife. The service 4x4 light was on at that time. Then after a few tries it c...
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1991 GMC C6000 Topkick C6H042 6.0L Surge, Cuts out VIN: 1GDG6H1P7M
Throttle plates will open but slam shut by itself as soon as it opens. Thought it was gov. shutting plate but the same with new gov. Not to familiar with governor system, could fault in computer system cause this?
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1992 Pontiac Sunbird SE 2.0L Compressor VIN: 1G2JB34H4N
Have a very clean sunbird that will not allow the compressor clutch to engauge. Has new, not reman, compressor and new pressue/transducer switch. When you turn on the a/c the clutch will click on for about 2 seconds and than shut off, the cooling fan will come...
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Fixes & Summaries for GM
Fix/Summary Answers
2001 Chevrolet Monte Carlo LS 3.4L No Start VIN: 2G1WW12E71
Thanks to everyone for your help, also, Thanks to Randy Briggs from Napa Training for his input, here is what we did: We went into the BCM, special functions, output control, and performed power moding test, and that is when we commanded it on, everything came... Trouble codes: P1626 (Theft fault), U1040 (No communication with abs module), U1096 (No communication with the ipc module).
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2003 Chevrolet Silverado 1500 5.3L Compressor VIN: 1GCEK14TX3
thanks everyone for the help when replacing the first compressor we did do the drier and orfice. when the second compressor went bad it did blow metal through the system. you guys were right it was not an electrical fault. we flushed out the system replaced dr...
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2009 Chevrolet Malibu LTZ 3.6L Door locks VIN: 1G1ZK577X9
I took the vehicle to my local favorite gm dealer to have the bcm installed and the tech there fixed it for me. he found both door lock switches were bad. the drivers door was completely open and the passenger door was stuck in the lock position. I am very gre...
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2002 GMC Envoy SLE 4.2L air bag diver s VIN: 1GKDS13S62
guys sorry about this help request that was sent,one of the tec in the shop sent this help request with out me knowing and he didnt put in what he had already done,he thinks that you can put a code out hear and some one will know what the problem is and just g...
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2003 Oldsmobile Alero GL 2.2L Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1G3NL52F23
THE PROBLEM WAS THE COIL COVER.I HAD OVERLOOKED IT EARLIER IN THE DAY BECAUSE IT WASN'T ACTING EXACTLY LIKE THE OLD QUAD FOURS USED TO(THAT WE'VE ALL DEALT WITH SO MANY TIMES.I WENT AND PULLED ONE FROM THE SALVAGE YARD THIS MORNING,AND THE CAR DIDN'T EVEN FIRE... Trouble codes: P0171, P0300.
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2006 Pontiac G6 GTP 3.9L Charging system VIN: 1G2ZM35126
First of all, thanks to all who replied. The information was very helpful. I looked at the fusable link after you guys pointed me in that direction. The fusable link and the solenoid connector were both broken, causing the charging issue. Both items have be...
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2003 Saturn LW200 2.2L No Start VIN: 1G8JU84F23
After carefully checking out your great suggestions, I decided to take a more direct approach to fixing this vehicle. I came to the conclusion that the pcm was giving me fits again, and that the design of this circuit was allowing the pcm to act as a circuit b...
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