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Prev Professional Automotive Repair Technical Discussions for June 11, 2012
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Open Help Requests for GM
Help Request Answers
2001 Chevrolet Monte Carlo SS 3.8L No Start VIN: 2G1WX15K01
Hi, Vehicle came in with a intermittant no start condition. I have not been able to duplicate no start. Vehicle does have codes stored. Security light comes on when you turn headlights on and then off. Checked powers and grounds at bcm with min/max on dvom to ... Trouble codes: B3031 (Security system controller in learn mode), U1064 (Lost communication with BCM), P1626 (Theft deterrent fuel enable signal lost)
2004 Chevrolet Classic (Car) 2.2L Excessive Emissions, Poor Idle Quality, Hesitation, Cuts out, Stall, Misfire, MIL Lamp on VIN: 1G1ND52FX4
We replaced the timing chain due to broken guide rail and jumped timing. vehicle has run poorly before the chain was replace and after the chain was replaced, Will not idle will not take fuel. we have performed a compression test and leak down test, passing bo... Trouble codes: P0107, P0108, P0300, 03014
2005 Chevrolet Silverado 2500 HD 6.6L Cooling Systems
Ive got a 2005 duramax 139k this truck came from another shop was told loosing coolent .After looking the truck ovcr see no real leaks presure test systm when removing the cap theres all kinds of preesure built up after only a couple mins I tinkk its got a hea...
1994 Pontiac Firebird Formula 5.7L Srs VIN: 2G2FV22P6R
Have a 94 firebird with airbag light on reads code b1062.need more info on the code as i have no manual.

Fixes & Summaries for GM
Fix/Summary Answers
2001 Chevrolet Silverado 3500 6.6L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1GCJK33101
Thanks for all your help, customer had just replaced all injectors within the last year WE FOUND A CRACKED INJECTOR LINE, HOWEVER THE Customer has not returned after trying the truck so I cant confirm a fix Thanks God bless Larry Trouble codes: P0093.
2006 Chevrolet Tahoe Z71 5.3L No Start VIN: 1GNEK13T76
I want to thank everyone that replied for this request. The actual fix was a cam sensor. I decided one day to sit down and actually go over my trouble shooting charts to see what I missed and turned out that GM just like Ford repair flow charts can take you in...
2006 Chevrolet Optra LS 2.0L Safety VIN: KL1JD69Z66
Thanks to all who replied. I entered the following suggested cars into the OTC Genysis scanner: A) 2006 Suzuki Reno, which works for engine codes and datastream. However, I couldn't get airbag codes. I think I am going to have to update the scanner. B) Dae...
2005 GMC Envoy XL SLE 4.2L Poor Idle Quality VIN: 1GKET16S65
Well this one is down the road, 2500 miles from home in the Rocky Mountains pulling a camper. What I found was this would only set the code once every few hundred miles. When I had it in the shop I could road test it and force the OBD system check to run and... Trouble codes: P0017 (Cam and Crank correlation error).
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