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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 21, 2015
International Automotive Technicians' Network (iATN) - Members Only
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2010 Chevrolet Express 3500 4.8L No Start VIN: 1GC2GTBA2A
The fuel pump relay is eratticaly not being engerized by the ECM. I caught it in the act and determined that the relay coil wasn,t recieving voltage from the Ecm, and of course I didn't have my Snap On scanner on it to monitor the Ecm. Now its running again, b...
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2011 Chevrolet Traverse LT 3.6L timing chain VIN: 1GNKRGED3B
Vehicle came in with dead misfire on cylinder #6. Eventually I found a broken intake valve spring on cylinder #6. Replaced both intake valve springs on #6 cylinder. Now had misfire on all cylinders on bank 2. Compared both intake cams and exhaust cam sensors w...
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1999 GMC K3500 Sierra SL 7.4L Misfire VIN: 1GDJK34J5X
Thank you for reading this, I know your time is valuable. I have a 99 GMC with a 7.4l engine that is having a lot of misfires. The vehicle came in last month with misfires in cyl 3 and 5. It failed a combustion test and the spark plugs were wet with coolant so...
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2002 GMC Sierra 1500 SL 4.3L MIL Lamp on VIN: 2GTEC19W22
This truck came in with a complaint of hard starting hot and MIL illuminated. P0172 was retrieved. Fuel trims were -27 and -25 long term. After removing the throttle body, fuel could be seen dripping from the fuel pressure regulator. A new regulator was instal... Trouble codes: P0171 (Bank 1 lean), P0174 (Bank 2 lean)
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2011 GMC Sierra 3500 HD SLE 6.6L No Start, No start when hot VIN: 1GT423C80B
Good afternoon, this truck was towed in as a no start.we found metal particles trapped the fuel pressure regulator located on the fuel pump. This prompted us to change the injector pump along with several fuel hoses and fuel lines. We were able to start the v...
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Fixes & Summaries for GM
Fix/Summary Answers
2005 Cadillac CTS 3.6L MIL Lamp on VIN: 1G6DP56755
Thanks to everyone who replied. I replaced the gaskets at the exhaust manifold to converter fittings. Reset fuel adaptions again. I have been road testing the vehicle for about 2 weeks and fault has not re-occurred. Fuel trims were lower on bank 2, around 7-8 ... Trouble codes: P2179 (Long term fuel trim bank 2 lean).
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1984 Chevrolet C10 Scottsdale 5.0L Poor Idle Quality, Hesitation, Stall VIN: 1GCCC14H7E
As many of you suggested it was the carb. No concerns were found with the compression testing, so I pulled the carb and opened it up to find a lot of debris/rust. I noticed the installer had failed to install a fuel filter anywhere in the system. After rebuild...
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2012 Chevrolet Sonic LS 1.8L Timing Belt
THANKS FOR THE REPLIES. ORDERED TOOLS FROM FREEDOM RACING. MANAGED TO GET IT DONE WITH OUT THE TOOLS THOUGH. WILL BE MUCH QUICKER WITH CORRECT TOOLS NEXT TIME.
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1996 GMC C1500 Sierra SL 5.0L power door locks VIN: 2GTEC19M7T
Thanks for the replies. I never did officially find where splice 255 was. The wire harness went up into the dash assembly, not down under the carpet. I removed the kick panels. followed the harness as far as I could and never reached the splice. I believe you ...
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