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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 6, 2019
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
1978 Cadillac Eldorado Biarritz 7.0L 2-1 downshift
Thanks in advance.TH 325. Car came in locked in forward gears. Removed trans, sent out to local builder and was verified the forward clutch was welded together. He did complete rebuild along with rebuilt converter. Installed trans, flushed cooler and lines...
2000 Chevrolet Blazer LS 4.3L MIL Lamp on VIN: 1GNCT18W8Y
Cant get it to ingage fuel cut out and will not do a cam sync
2005 Chevrolet Equinox LT 3.4L Misfire, Misfire on decel VIN: 2CNDL73F75
Hey guys thanks for your help. Customer have vehicle towed in. Upon initial inspection found engine cranks excessively before it starts when cold. Checked fuel pressure with koeo and have 60lbs and goes down to 48lbs will start and all cylinders misfire. A...
1995 Pontiac Grand Prix GTP 3.4L Power steering VIN: 1G2WJ12XXS
Hi all, I've changed plenty of PS pumps over the years, but this one has me stumped. I previously requested help with this vehicle (thanks Dan H!). The owner was concerned about the age of the original pump and asked me to change it. I wish I hadn't l...

Fixes & Summaries for GM
Fix/Summary Answers
2015 Chevrolet Express 3500 6.0L MIL Lamp on VIN: 1GB3G3CG2F
We replaced the plugs like I stated we were going to do and they were original at 171K they were way over gap!!! no diode left. Again we found no active vac leaks, this is a fleet truck and if it runs it has to go on the road by a certain time every day. Thank... Trouble codes: P0171 (bank 1 lean), P0174 (bank 2 lean).
1997 GMC Sonoma SLE 4.3L No Start VIN: 1GTCS19X9V
Sorry for the long repair time but being a vo-tech school does not allow us the time to work all day on any one problem as we need to follow our study plans. It turns out a new aftermarket distributor was the fix. If we had the old unit out once we had it out...
2004 GMC Envoy XUV SLE 5.3L MIL Lamp on VIN: 1GKET12S54
After closely comparing lab scope pictures of known good CMP to CKP lab scope patterns, decided the pattern on the vehicle looked good. After initially installing new Delco cam and crank sensors without any change, decided to replace the PCM also with no chang... Trouble codes: P0016 (CKP-CMP Correlation Problem).
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