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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 27, 2011
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Open Help Requests for GM
Help Request Answers
1997 Chevrolet S10 4.3L control system VIN: 1GKCT18W7V
I help out at a junkyard and I seem to have got into the middle of a good one. The lights on the 4 whl drv switch do not coincide with the position of the transfer case. The lights flash on for a moment when the ignition is first turned on like they are suppos...
2006 Hummer H3 3.5L Misfire VIN: 5GTDN13646
Hello GM/Hummer techs: Have this 06 H3 with a very intermittently cylinder #2 misfire. It happens, MIL goes on. As customers drives to shop MIL is off. When I monitor misfires with scan tool, it is zero. I can see the history of the misfire counts,(in total no... Trouble codes: P0302 (Cyl 2 misfire)

Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Trailblazer LT 4.2L Transfer case VIN: 1GNET16SG3
Everyone was correct-tires did fix it. I still do not understand why it engages the transfer case in auto 4wd on dry pavement even after the tires were replaced.
2004 Chevrolet Aveo 1.6L No Start VIN: KL1TD52614
Talked to customer, they said it was running good before broke. Diagnosed all codes. Had every damn thing. Just wouldnt run. I even double checked for wires left off and all grounds. This morning I decided to doudle check timing marks, Guess what? They were de... Trouble codes: P2610.
1995 GMC K2500 Sierra SLE 6.5L Poor Idle Quality, Stall, MIL Lamp on, Extended Crank VIN: 1GKGK26F2S
After preparing an estimate, the fleet operator decided to take it back to his shop and reattempt his repair. He has yet to inform me of the result. Most of the help I got suggested a bad pump but to also make sure the timing gears were in the correct position... Trouble codes: 18 (Pump Cam Reference Pulse Error), 35 (Injection Pulse Width Error Response Time Short).
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