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Prev Professional Automotive Repair Technical Discussions for July 25, 2014
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Open Help Requests for GM
Help Request Answers
1999 Chevrolet Silverado 1500 4.3L Mechanical VIN: 1GCEC14W9X
Crank no start, fuel pressuer 65lbs, compression good, have spark, pulled upper intake for injector inspection found no leaks. Old plugs fuel fouled new plugs in. Cut fuel relay still won't fire, tested ecm fuse and ign fuse for fail durring crank, all checked...
2000 Chevrolet Blazer LS 4.3L Surge
Came in for stalling at stop. Could only verify once through a whole tank of gas. Now it started having low power. The more you step on the the accel the more it will fall on its face. Checked fuel pressure-52-60psi. So replaced fuel pump. Same problem. Remove...
2009 Chevrolet Silverado 2500 HD WT 6.6L Eng oil VIN: 1GCHK49659
Premature oil life monitor anyone? This vehicle will prompt for an oil change after a few days or weeks with only a few hundred kms. We have reflashed the pcm but it still does it. Has anyone run across this problem in chev trucks? What did you do to fix it?
2007 GMC Yukon XL 1500 Denali 6.2L Temperature VIN: 1GKFK66817
Greetings all. We have evacuated & recharged this vehicle multiple times with fresh R134 - testing the temperature at the front accumulator tubes we see 58 on the inlet side and 55 on the outlet side, and each time the vent temperature is 49 and all is well...
2004 Pontiac Aztek 3.4L 4x4 VIN: 3G7DB03E34
Have a 2004 aztek all wheel dive with a 3.4l has a warning massage on dash that says disabled all wheel drive scaned comp no codes found checked abs sys no problem found will not lock into 4 wheel . could not find any data on this sys in my mitchel sys try to ...

Fixes & Summaries for GM
Fix/Summary Answers
1990 Cadillac Eldorado 4.5L Poor Idle Quality, MIL Lamp on VIN: 1G6EL133XL
Thank You to all who responded. Marti in Mi was in fact correct re wire position. I did a lot of research and in All Data there was a flawed test for the cam sensor, involving a knife!, but it did reveal the correct positions. A note, 2 reman distributors had ... Trouble codes: 41 (Camshaft position / reference sensor).
2008 Chevrolet Express 3500 6.6L MIL Lamp on, reduced engine power VIN: 1GBJG31658
thanx for all the help.As i stated these ambulances get serviced regularly and not always by our shop.So after checking everything twice I got lucky to find the braided fuel line going from the tank to the low pressure pump had been kinked.Probably when someon... Trouble codes: P0087.
2007 GMC Yukon Denali 6.2L leftgate VIN: 1GKFK63827
we found a broken wire in the rear door harness. after c=going back to check all posible replies we went back to check the harnes over the top of the door to the vehicle and we found a broken wire where all is working now thanks to all
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