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Prev Professional Automotive Repair Technical Discussions for January 16, 2015
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2003 Buick Century Custom 3.1L ac temps VIN: 2G4WS52J83
customer says air conditioning intermittently blows warm out vents while driving, not outside air but heated air, he cycles the ac on button and goes back to cold, sometimes for short periods sometimes for remainder of day. pressures are good, I did evac and r...
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1994 Chevrolet Astro CL 4.3L Surge, Stall, Misfire VIN: 1GNDM19W8R
THANKS IN ADVANCE , THIS VAN CAME IN WITH A VERY ROUGH IDLE AND MISFIRES, WE TUNED IT UP, CAP,ROTOR,WIRES,PLUGS,FILTERS. BETTER BUT NOT ALOT . WE RAN SOME 44K THROUGH IT , BUT 3 DAYS LATER IT CAME IN ON THE HOOK. NOW RUNS VERY ROUGH, BACKFIRES. WE CHECKED THE ...
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2011 Chevrolet Silverado 3500 HD WT 6.6L Def VIN: 1GC4KZC8XB
Greetings all, here we have a 2011 Duramax LML with lovely DEF/SCR problems. I am looking for input from you Duramax guys and gals who fight with these more regularly than we do. This is our first intensive issue. At first it presented itself with a complain...
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2012 Chevrolet Cruze LTZ 1.4L srs module VIN: 1G1PH5SC4C
Easy one for you GM GoodWrenchers. Have to program the srs module in this 2012 Cruze that has pushbutton start. Vehicle power shuts off after 5 minutes in ACC mode. How do you keep the power on to program the srs. Owners manual is missing so what is the push b...
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2007 GMC Sierra 1500 WT 5.3L Excessive Emissions, MIL Lamp on VIN: 2GTEK13M57
MAF replaced with harness smoked intake-found no leaks come off idle fuel trims are great- idle engine long term go high short term are perfect. gotta have a vacuum leak somewhere!!! pulled upper intake manifold -found gaskets were deformed. problem still ther... Trouble codes: P0171 (p0172-), P0172 (p0449-), P0449
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2002 Saturn LW300 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1G8JW84R62
Hello everyone, thanks in advance for your help. Vehicle was towed in undriveable and surging, faults P0103 (mass air flow circuit high input) along with P0300, P0304, P1780 (engine torque reduction signal circuit OR MIL requested by TCM), P0606 (ECM/PCM proce... Trouble codes: P0304 (Cylinder 4 Misfire Detected)
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2009 Saturn Outlook XR 3.6L ecm VIN: 5GZEV23D09
so we did a cam chain replacement no problem,or so we thought go to start no crank, can crank car from starter relay by jumping so wiring seems good checked all fuses all data will tell us about , hooked up scanner did check dlc green connector ground is good ...
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Fixes & Summaries for GM
Fix/Summary Answers
1996 Chevrolet Cavalier LS 2.2L Cylinder #4 VIN: 1G1JF5248T
THANKS FOR AL [...] THE INPUT GUYS. TURNED OUT TO BE A STICKING EGR VALVE VENTING INTO #4 CYLINDER. CLEANED EGR AND RE-TESTED. NO CODES. CUSTOMER TOOK VEHICLE.
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2011 Chevrolet Equinox LS 2.4L Hesitation, Misfire, MIL Lamp on VIN: 2GNALBEC5B
Found water in the air box.cust had got stuck in the snow and must have got snow up in the air box,unsure if it was freezing up, also a good cleaning of the throttle fixed this baby. thanx for all the help. Trouble codes: P2135.
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