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Prev Professional Automotive Repair Technical Discussions for February 2, 2014
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Open Help Requests for GM
Help Request Answers
2004 Chevrolet Silverado 1500 5.3L 4 wheel drive VIN: 2GCEK19TX4
I have an issue with the 4wd and heater fan , I have no power at either fuse , my transfer case is working but the axle wont lock and no heater fan operation . has anyone had similar issues ? where does the power come from to the underdash (Lh) fuse centre? do...
2003 Pontiac Grand Prix SE 3.1L No Start VIN: 1G2WK52J33
I am trying to install a salvage PCM in this car. I have a PCM out of a 2004 Impala it will not start car and only a P0520 code and scanner shows no injector pulse. Security is ok its in BCM. I don't have a dealer in my town to tow car to and have PCM flashed....

Fixes & Summaries for GM
Fix/Summary Answers
2007 Chevrolet HHR LS 2.2L MIL Lamp on VIN: 3GNDA13D67
Have not had vehicle return since. Will remove timing cover to visually verify chain timing, and check cam reluctor wheel, as suggested, when it returns. Thanks for the tips. Will post what I find at that time. Thanks again for the info. Trouble codes: P0016 (Cam crank correlation problem).
2009 GMC Yukon XL 1500 SLE 5.3L check engine VIN: 1GKEC36019
Thanks for your help. I was not able to find the problem with this one. The code returned after a week when the weather got cold again. I lowered the fuel tank to check for any wiring problems on top of the fuel tank & none were found. I figured it must be in...
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