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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for March 4, 2007
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Open Help Requests for GM
Help Request Answers
1993 Chevrolet C1500 Cheyenne 4.3L running lights VIN: 1GCEC14Z6P
Can someone please send me a schematic of the running light circuit. Or if you know a good place to look for a common short in this system, it might save me a few hairs. Thanks in advance. Brad
1996 Geo Tracker 1.6L MIL Lamp on VIN: 2CNBJ1868T
I am dealing with a high mileage vehicle that keeps setting an egr flow code. The system works electrically and mechanically. If you lift the egr valve, the engine stalls. The system functions normally. The egr passages seems to be clean. I performed a motovac...
2000 GMC SCHOOL BUS 7.2L starter VIN: 1GDG7T1COY
This 2000 GMC bus chassis intermittantly doesn't crank. I have checked power at the starter solenoid when in the crank position and there is none. I have replace the ignition switch and bypassed the neutral safety switch with no change. Is there a relay somewh...
2001 GMC Yukon XL 1500 SLT 5.3L Drain on Bat VIN: 3GKEC16T31
Inadvertent Power Timer in the BCM times out after 20 minutes, and then the BCM will reset the internal timer and reactivate the inadvertent power relay by grounding the control circuit. This puts a constant 125m amp drain on battery, running it down in 3 or 4...
1993 Pontiac Bonneville SSE 3.8L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1G2HZ5212P
This car was brought in for a NO start problem. Upon checking it had good fuel pressure, NO spark, NO injector pulse. So I went ahead and replaced the cam sensor, and it still had NO injector pulse. I went and pulled the ignition coils, and found alot of green... Trouble codes: 41 (No camshaft reference signal)
2001 Saturn L200 2.2L engine VIN: 1G8JU52FX7
I have this Saturn towed in, has no compression , pulled valve cover and see timing chain does not seem bad, but does seem to be slack then tight during cranking. Is it possible for this to jump teeth and cause no compression? Is this a interference engine? I ...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Chevrolet Blazer LS 4.3L Door locks, Power Seats, Interior Lights VIN: 1GNDT13WXY
Fellow Technicians, Many thanks to you all. I really appreciate you folks taking the time to give me your reponces. Several of you were right on the money. The problem was a shorted wiring harness located right under the driver side footwell area. After a lo...
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