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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for April 8, 2011
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Open Help Requests for GM
Help Request Answers
1997 Chevrolet K3500 5.7L Fail Safe Mode VIN: 1GCHK34R2V
This truck was brought to me yesterday from another shop after having the transmission rebuilt with the same failure after rebuilding it. It currently is stuck in failsafe. The other shop had first put a new ignition switch/harness in. Then they installed new ...
2006 Chevrolet Equinox LS 3.4L park lights, instrument panel lights VIN: 2CNDL63F16
Greetings all. This Equinox intermittently blows the fuse for the park lamps and dash lights. If a new fuse is installed it seems to last anywhere from 1 day to a week. I have found the Park Lamp switch Signal wire (circuit #74, light blue) is open. From looki...
2001 GMC Yukon XL 1500 SLE 5.3L driveline VIN: 3GKFK16T71
This is a vehicle I purchased to sell and have been driving it myself. There is a vibration distinctly at 60,65, and 70 mph. It is there basically after fifty but is resonant at these speeds. Initially I had 3 bad ujoints, then discovered that the yokes on bot...
2003 Oldsmobile Alero GL 3.4L No Start VIN: 1G3NF52E53
Towed in no crank/no start. We jumped the relay and the car starts but dies as soon as you pull jumper from relay. The security light flashes once. Checked voltage at BCM passlock sensor wires. Had NO Battery voltage on white wire. Had 5 volt reference on yell... Trouble codes: B2960 (security sensor data incorrect but valid)
1998 Pontiac Grand Prix GTP 3.8L No Start VIN: 1G2WP1215W
problem started immediately after changeing the nose cone on the supercharger. was replace as bearing was noisy. After road test vehicle would turn over but not start. Put scan tool on. no codes. Noted no injector pulse. rpm good. no 3x reading 18x ok. battery...
2001 Saturn L300 3.0L No Start, Poor Idle Quality, Surge, MIL Lamp on VIN: 1EWDR92H83
hi all, saturn here had the above codes measured currents at connector for throttle and it checked out but car came in with rough idle like a bad plug but no misfires detected on tech2 some values on data stream was off so i replaced throttle assembly got my ... Trouble codes: U2105, P1510, P1516

Fixes & Summaries for GM
Fix/Summary Answers
2005 Chevrolet Suburban 1500 LS 5.3L Low Oil Pressure VIN: 1GNEC16Z45
First a thanku to all those who replied to this post. After replacing oil pump with same results, customer opted to replace engine.
2007 Chevrolet Colorado LS 2.9L MIL Lamp on VIN: 1GCCS14907
This vehicle went away with just a gas cap? Parts store figures that'll solve all their problems...I did check fuel pressure yesterday morning 1st thing. KOEO it was 45, KOER it was 58-60 psi. Took it on a long run with the gauge on the windshield and the scan... Trouble codes: P0171 (System lean bank 1).
2003 GMC Envoy XL SLT 4.2L MIL Lamp on, No Acceleration VIN: 1GKET16S23
Got this one fixed. The replies for the most part suggested cleaning or replacing the Throttle Body. As well as checking wiring grounds, and checking wiring harness by the Alt.. I had previously cleaned it, but that didn't do any good on this one. The final f... Trouble codes: P1512, P1515.
2000 Pontiac Grand Prix SE 3.1L Blend Doors VIN: 1G2WJ52J7Y
Thank you for the 3 replies. 2 regarding mitchell navigation and one with actual testing info. Our customer would not approve disassembly to start diagnosis so I have no other option than to close without a fix. Thank you all again for your input.
1997 Saturn SL1 1.9L No Start VIN: IG8ZH5282V
Sorry took so long to close, had several problems with vehicle. first off we all new the fuel pump was bad, but could get running with starter fluid, after talking to customer several times and getting more information, of course it was there daughters car tha... Trouble codes: P1599, P0512 (testing and results).
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