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Prev Professional Automotive Repair Technical Discussions for December 25, 2006
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1982 Chevrolet C20 Custom 6.2L No Start VIN: 2GCGC24J3C
Vehicle was turned off to fill fuel tank and would not restart. checked all glow plugs and they are good. checked fuel shut off and it is receiving power with key on. Pressurized fuel tank (with shop air) and fuel flows with no air bubbles to injector pump, I ...
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1990 Chevrolet S10 Blazer 4.3L Poor Idle Quality, Hesitation, Surge, Stall VIN: 1GNCT1823L
This vehicle has intermitant symtoms. About 60% of the time it will run poor,bog on accelleration+lose power on hills. Idle fluctuates and almost stalls. Besides the new cat and o2 sensor from another shop we have replaced throttle body with a rebuilt unit and...
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1994 Pontiac Grand Am SE 3.1L Engine Removal VIN: M3RM575549
Got this vehicle not running and previously diagnosed needing head gaskets. Replaced gaskets and got engine running to find it was run to long with water in the engine and has a rod knock. The motor manual instructions for engine removal is to drop the engine ...
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Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on VIN: 1GNET16S23
Thanks for the imput. Reflashed the PCM. Two weeks have passed and all is well. Merry Christmas to all. Trouble codes: P0172 (Rich condition).
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2005 Chevrolet Silverado 2500 HD 6.6L valve train VIN: 1GCHK23265
thanks to all who replied. replaced #5 intake rocker arm, was worn bad on bottom side. i believe this engine has been apart & intake valve bridge was installed backwards causing side wear on rocker arm. thanks again, merry christmas.
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1998 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GR62C0W
My lean problem was solved by replacing the intake manifold pressure relief valve. In the event of a backfire it relieves pressure to avoid damage to the plastic intake. The valve, with 2-3' diameter housing is available from GM for just under $40.00 list. Rot... Trouble codes: P0171 (Lean Bank 1), P0174 (Lean Bank 2).
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