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Prev Professional Automotive Repair Technical Discussions for November 26, 2012
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Open Help Requests for GM
Help Request Answers
2003 Buick LeSabre Limited 3.8L Drl VIN: 1G4HR54K63
drl comes on for 5-6 seconds then headlights come on. my scanner will not pull up bcm. both powers at drl relay, headlights high and low work corectly. twilight slider switch works ccorrectly. I think DIM is culprit but would like some input to be sure. if I b...
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1999 Chevrolet K1500 LS 5.7L speedo non op VIN: 1GNFK16R3X
Speedo is non-op. can someone please tell me what the vehicle speed output voltage should look like when back-probing at the vcm with dmm. vss input to vcm is good.
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2001 Chevrolet Tracker 2.0L Mechanical VIN: 2CNBJ13C61
truck came back in today for same coad p0340 cam sensor it will stall when it gets worm.now what i found is if i move the cam sensor or tutch it the truck will stall some times it will start wright back up and some times it will not i repined the canector that...
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2003 Chevrolet Silverado 1500 4.3L Airbag VIN: 1GCEC14X63
Customer purchaced this used truck. It has codes B0017, B0018, and B0051. Codes will not clear. All airbags and sensors are connected. Passenger present sensors are working. We are at a loss on this one. Any help will be greatly appreciated. Thanks
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2003 Chevrolet Silverado 2500 6.0L reduce power VIN: 1GCHK29U63
customer told me he would constantly get reduced power setting all the time. i checked every wire from the peddle to the throttle body. i found one broke, repaired it. now he wont get reduced power unless he is cruising. i drove with him we sere going 50 mph l... Trouble codes: P0220
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2006 Chevrolet Suburban 1500 Z71 5.3L gauges VIN: 1GNEC16Z46
Customer brought in vehicle said gauge was going down while driving.scanned with no codes in memory.We tested the charging system and with all accessories on,a/c,high fan,high beams and after a few minutes charging slowly decreased from 14.2 to 12.6..The batte...
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1998 GMC Sonoma SL 4.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GTCS14X4W
Good morning everyone, I have a 98 Sonoma 4.3x that I purchased for my son as a first vehicle. When i bought it the owner had been chasing a running problem and replaced many parts trying to replace it on his own and then the engine finally spun a rod bearing ... Trouble codes: P0300 (multiple random misfire)
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1999 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GR62C0X
Hey guys i have installed 2 new hoses a new water pump, thermostat and flushed the trans.. This is a new customer to me and i do not know if she will be truthful.. After all repair's seemed great test drove and the idle will rise up to 1800 or better.. restart... Trouble codes: P0420, P0731
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2002 Saturn LW300 3.0L Body control VIN: 1G8JW84R12
With headlights on bright - both physically and bcm info - the blue " high beam " light on dash is exactly backwards. We have dash illumination lights on bulb check, but no other time. Dealership swears bcm is good.
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Fixes & Summaries for GM
Fix/Summary Answers
2003 Cadillac Escalade 5.3L lost of acceleration VIN: 1GYEC63T13
This is the only code i received, my exhaust system is good, throttle body wires are good. I would also like to mentioned that i am using a GM Tech 2 scan tool, and this is where i can see the parameters of the accelerator pedal active when the throttle body d... Trouble codes: P0608 (Vehicle speed output circuit).
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1999 Chevrolet Venture 3.4L Driven Wheels VIN: 1GNDX03E2X
Thanks to all those who mentioned the issue with the broken wire. Found one about 8 inches up the harness on the left hand side. Repaired; customer is thrilled. Thanks again.
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2006 Chevrolet Impala LS 3.5L alternator VIN: 2G1WB58K96
Gentlemen A load of very good info. A large number said the alternator and I should have gone there first. The customer told me when he dropped the car off the alternator rebuild shop had checked the alternator and felt the problem was elsewere in the system....
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2009 Chevrolet Suburban 1500 LT 5.3L park assist VIN: 1GNFK26319
I did call the phone number listed and it says to input your dealer number. This is why I was looking for an alternative way to disable without a reprogram. Thanks to all who took time and replied. The owner will have to pay us or the dealer to reprogram.
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1999 GMC C3500 Sierra SL 6.5L No Start, Hesitation, Cuts out, Stall VIN: 1GDKC34F2X
Great help from everyone thank you! The truck was towed to another shop that would do the injector pump for less money than our shop. Most seemed to think the complete pump was the cure and many suggested the Id Module, which I would have done IF it were my o... Trouble codes: P0251, P1217.
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1996 Oldsmobile Aurora 4.0L No Start VIN: 1G3GR62C9T
Had this vehicle on the back burner for awhile, finally got down to some circuit testing of anti-theft system for no start, the wierd thing is, I found testing under 97 Aurora in Alldata, but not for 96??? Anti-theft module tested bad (fairly simple test), i...
4
1991 Pontiac Grand Prix LE 3.1L fuel injector VIN: 1G2WH54T8M
I JUST KEPT LOOKING FOR A SHORT PINK AND BLACK WIRE WAS SHORTED TO GREEN/BLUE WIRE UNDER STEERING PUMP FROM OIL LEAKING AND HEAT FROM ENGINE WIRES WERE MELTED TOGETHER ONCE I PULLED THE POWER STEERING PUMP OFF I OPEN THE HARNESS TO LOOK AND TO MY SUPRISE THEY ...
17
2007 Pontiac G6 2.4L Misfire, MIL Lamp on VIN: 1G2ZG58B17
Fixed it with the crankshaft variation relearn. Thanks for all you that helped on this, I could have not done it with out you. Trouble codes: P0171 (Lean), P0300 (Misfire).
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