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Prev Professional Automotive Repair Technical Discussions for August 7, 2010
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Open Help Requests for GM
Help Request Answers
2006 Chevrolet Silverado 2500 HD WT 6.0L Misfire VIN: 1GBHC24U56
has a misfire on cly. 1,5,6,8 only at or around 2200 to 3000 rpm. moved coils from non misfire cly. to ones that are not. fuel psi. is 58 psi. i did a injetor balance test all looked good 55psi drop to 39 psi. did not find any vac. leaks hot or cold. did the t... Trouble codes: P0300
2004 Pontiac Sunfire SE 2.2L Misfire, MIL Lamp on VIN: 1G2JB12F14
hey evreyone. Im wondering if any one out there has had any issues like this (maybe someone can save me the time of opening the entire engine harness). I have power on the pink wire at the injector, but no noid light flash. i have continuity on the pink/black ... Trouble codes: P0300 (misfire detected), P0203 (Injector 3 control circuit)

Fixes & Summaries for GM
Fix/Summary Answers
1982 Chevrolet G20 Sportvan 5.7L Excessive Emissions, Hesitation VIN: 1GCEG25H5C
well i am going to call it fixed because even though it still runs a bit rough the smoke is all gone and the back fire problem is narrowed down to that diverter valve. if you disconnect it the back fire goes away. i am in the middle of a valve adjustment, it l...
2001 Chevrolet Cavalier Z24 2.4L wheel bearing VIN: 1G1JF12T21
HAd some good ideas, checking the grounds goes back a ways ..if someone has never seen it..i have seen lug nuts welded on and messed up because of poor grounds, what i believe will be the fix for this car when i went back and looked at the lower control arm wi...
2001 Chevrolet Blazer LS 4.3L rocker arms, lifters VIN: 1GNDT13W01
Thanks to everyone who took the time to respond to my request. Everyone offered good things to consider. Most useful to me were the responses from Dennis, Joe,and Rob, who helped me verify that the heads would work. I also consulted with a friend in the aut...
2005 GMC Sierra 1500 5.3L MIL Lamp on VIN: 2GTEK13T75
Sorry it took so long to update. It would appear that you guys were right again. I brought vehicle back in and replaced intake gaskets. It's been gone about 2 weeks now and haven't heard back, so I'm assuming this one is a fix. Thanks to all. Trouble codes: P0171.
2003 Pontiac Grand Prix GT 3.8L Misfire VIN: 1G2WP52K83
After cleaning the fuel delivery system three times with AC Delco Upper Engine and Fuel Injector Cleaner, the misfire count went to zero. It has been two weeks and have not heard from customer. I think it had carbon build up in the cylinder. Thanks for all the... Trouble codes: P0300 (Random Misfire).
2003 Saturn Vue 2.2L won't hardly move VIN: 5GZCZ33D13
Here's the scoop. This vehicle had multiple problems as I suspected. Part of the problem was that part of Alldata's posted wiring diagram was for the CVT trans, and part was for the normal Auto trans. I called them and they sent me the complete wiring for the ... Trouble codes: P0502, P0701, U2106 (Lost Comm W/Trans), U2107 (Lost Comm W/BCM), U2105 (Lost Comm W/ECM TCM Code), U2107 (Lost Comm W/BCM).
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