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Prev Professional Automotive Repair Technical Discussions for October 24, 2014
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2003 Chevrolet Silverado 2500 HD 6.6L Temperature VIN: 1GCHK23193
Oil pan was dropped, disconnected the temp sensor at the transmission, and also at the the wires from the temp sensor at the TCM.Temperature showing on the scan tool never changes. I was expecting to see -40 degrees but it did not do it. Is the TCM going bad? ...
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2005 Chevrolet Express 2500 4.8L 2-3 VIN: 1GCGG29V85
We rebuilted this transmission and insatalled transgo kit sk4l80e, drives on safe mode only. Reverse works good, test drove it and check engine light came on scanned and i get code po757 solenoid b stuck off, got solenoid out to test and is good. Checked valve...
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2012 Chevrolet Malibu LTZ 3.6L Misfire VIN: 1G1ZG5E72C
Customer picked up car, ran fine 2 days later brings car back states when sitting at idle in park with engine running check engine & traction light will flash at times. Put car on analyzer found history of #2 cyl miss fires, no codes stored, no miss fire warm,... Trouble codes: P0302 (Miss 2 Cyl)
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1999 GMC Sierra 1500 SL 5.3L MIL Lamp on VIN: 2GTEK19T5X
Hello Friends This vehicle came in for a big service, including changing transmission fluid and filter. The customer says when the service four-wheel drive light comes on the vehicle will not shift properly. When I hooked up my Modis I got the code B2647 ambi... Trouble codes: B2647 (Ambient Light Sensor Circuit Low), P0758
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Fixes & Summaries for GM
Fix/Summary Answers
2003 Chevrolet Suburban 1500 LS 5.3L Hard start VIN: 8GNFK16Z53
It was the fuel pump causing loss of pressure. Customer declined repairs so I could not finalize repairs. Thank you very much for all the information I received it was extremely helpful. Trouble codes: P0496 (EVAP System Flow during non purge).
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2003 Chevrolet Silverado 2500 6.0L booster/steering/braking VIN: 1GCHK29U83
What a nightmare this vehicle was, but it is fixed & gone. Fighting two separate issues: Hydraboost unit (reman, non GM unit that was previously installed here) would have internal valving issues when warm and rob assist from steering. Replaced unit & that is...
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2005 Chevrolet Express 2500 6.0L No Start, Stall VIN: 1GCGG29U65
This one is fixed thanks for all your help. The problem was a bad bcm and their was a fuse missing from the under hood fuse block for the cluster then we did the key relearn and all is good. Trouble codes: P1626, B3031.
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2007 Chevrolet Silverado 2500 HD Classic LS 6.6L fuel VIN: 1GCHK23D97
After verifying that the injectors were not firing I replaced all 8 Injectors and that fix it. Thanks for all the help...
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2006 GMC Sierra 3500 WT 6.6L Head Gasket VIN: 1GDJC33D06
Well its back together and purring like a kitten. I had a total of about 28 hours in the job. All the tips were really helpful. This was in fact the first diesel ive ever torn into. Like most of you said, it looks more intimidating than it is. Number everythin...
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2007 GMC Sierra 2500 HD Classic SLT 6.6L Push Rod VIN: 1GTHK23D17
The camshaft lobe on #8 exhaust was broke right off on the top. It looks like when that may have happened it hit #6 intake which is right next to it. It looks like it may have been a factory defect and finally let loose.
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