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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 26, 2017
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
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1987 Buick Regal GNX 3.8L Excessive Emissions VIN: 1G4GJ1170H
Was towed in as no start. Found badly flooded,another shop had changed maf & o2 sensors,dried plugs and changed oil,started,runs exc. rich,black smoke and soot.Found 3 inj. leaking down and balance poor,replace injectors with delcos,starts and idles better but...
2000 Chevrolet K2500 7.4L Cuts out VIN: 1GCGK23J4Y
Welcome techs. Thanks for any help. I first got this thing and it would not rev up enough to shift out of 1st. Acts like a plugged convertor. Checked back pressure (Convertors have been removed) and it passed. found corroded wires on the harness by the coil. f...
2007 Chevrolet Silverado 1500 Classic WT 4.3L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, MIL Lamp on VIN: 1GCEC14X97
Im at a loss on this one. 4.3L Vortec will start up fine when cold. And runs fine until it gets warm. It will start to stumble when you bring it off idle, and the longer it idles, the worse it idles. Eventually it will idle so poor it will die, It was brought ... Trouble codes: P0335 (CKP Sensor A Circuit Problem), P0341 (CMP Sensor Circuit Out Of Range)
2004 GMC Savana 3500 6.0L Poor Idle Quality, Cuts out, Misfire VIN: 1GDHG31U34
Got this box truck with a complaint of intermittent hesitation and or cut out. Vehicle has code P0300, but "Check Engine" light isn't on. Misfire data shows multiple misfires on right bank, with cylinder 6 being the worst. I swapped the coil and wire with anot... Trouble codes: P0300 (testing and results)
2015 GMC Yukon XL Denali 6.2L Ride Control VIN: 1GKS2JKJ0F
Vehicle was in for a Tire Rotation and Oil Change at one of our other locations. The services were performed and the vehicle was delivered to the customer. The customer came back almost immediately complaining of the vehicle riding "like a log wagon". He then ...

Fixes & Summaries for GM
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