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Prev Professional Automotive Repair Technical Discussions for October 23, 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
1998 Chevrolet K1500 Cheyenne 5.7L Excessive Emissions, Hesitation, MIL Lamp on VIN: 2GCEK19R5W
Thanks guys in advance. This is not the usual P1345 situation we have all seen & is much info already posted. When distributor is installed at TDC the computer always reads -25 on scanner retard. If you advance it one tooth it ALWAYS reads +30 on scanner cam r... Trouble codes: P1345 (cam/crank correlation)
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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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2004 Chevrolet Trailblazer LS 4.2L Timing Chain VIN: 1GNDT13S34
I'm replacing the chain, guides, tensioners, sprockets and actuator on this trailblazer. Vehicle came in needing to pass emissions, has a poor idle and sets p0016 almost as soon as it starts up. I pulled the v/c and and checked the exh cam actuator, it was ver...
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2006 Chevrolet Corvette 6.0L Folding Roof VIN: 1G1YY36U56
I tried to stow the roof with the manual method as outlined in the owners manual but wouldnt work. Now when i try to close the roof this is what happens. Tonneau cover pops up, roof comes up but then tonneau cover will not come down so that the roof can finish...
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Fixes & Summaries for GM
Fix/Summary Answers
1998 Chevrolet K1500 Cheyenne 5.7L Misfire #2 VIN: 1GCEK19R3W
first, thanks for all the replies. we pulled the valve cover and checked the springs,rockers,etc. all ok. we did a leak down test, only about 5%, so all good. we decided to go back to basics, and to make the story short , we found the new plug we had put in to...
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1999 Chevrolet Express 3500 5.7L No Start VIN: 1GCHG39R8X
Without a doubt some of the greatest tech worldwide taking there valuable time to help others in this changing profession..the vehicles can be challenging enough without the parts being even more challenging..Now the fix after being back and forth about the or...
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2000 Chevrolet Silverado 1500 5.3L abs VIN: 1GCEK14T7Y
changed both frount sensors out on chevrolet 1500 prolem seamed too resolve it self
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2007 Chevrolet Avalanche LT 5.3L Excessive Emissions VIN: 3GNEC12J17
the customer finally admitted that he was mixing e85 with regular gasoline that's the reason the o2 sensors cap maxing out at lean thanks everyone for your help those who guessed check the gasoline and alcohol content or right Trouble codes: P0171, P0174.
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2009 Chevrolet Traverse LTZ 3.6L Incorrect Vent & Temp. VIN: 1GNEV33D79
OK so I may not close this out as well as most of my help requests as I am pushed for time & am already late closing. I am also gonna contradict some of what I told you in my update just because hindsight is 20/20. The car is fixed after removing the Da...
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2010 GMC Canyon WT 2.9L Starter VIN: 1GTCSBD93A
As I said I was posting this for a shop working on one of our trucks. Well after a week they gave up. So I hauled it to another shop. In about an hour they figured out there was a blown fuse. It was located in line about 6 inches up from the OBD connector. Th...
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