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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for February 11, 2014
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Open Help Requests for GM
Help Request Answers
2003 Cadillac Escalade 6.0L Hidden Leak VIN: 1GYEK63N83
I told the customer that to save me time and him money, I'd like to block off the rear A/C unit and repeat pressurizing the system with shop air. [Yes, I know that using Nitrogen is the "proper" way, but at this point, his accumulator has already absorbed enou...
2005 Cadillac CTS 3.6L Fluid VIN: 1G6DP56755
Hello. I have a question for all of you transmission experts. We have an '05 Cadillac CTS in in our shop that has broken it's transmission cooler,and has caused the coolant and trans fluids to mix. Right now the trans fluid looks similar to milk. Customer sta...
1999 Chevrolet C3500 6.5L Ebcm 12476000 VIN: 1GBJC34F6X
Code co237- done the flow chart an the ebcm is bad dealer says discontinued with no revised unit to replace with. The ebcm [...] i also noticed that...
2004 Chevrolet Trailblazer EXT LS 5.3L Electronic VIN: 1GNET16P04
Truck Came In with Transmission code P740 & slipping issue. Install reman transmission from our local dealer Flush & refill with new GM Fluid,Truck drove great with no issue. 3 days later truck came back with all these codes:740,[...], all fuses are go...
2007 Chevrolet Tahoe LTZ 5.3L Sunroof VIN: 1GNFK130X7
Sunroof stuck closed, will not operate in any way, cannot find sunroof in scan tool, has all other modules, checked fuses all ok, also tried to find sunroof in other modules no luck, any help would be great. Thanks
2010 Chevrolet Cobalt LT 2.2L MIL Lamp on VIN: 1G1AF5F52A
tested wiring check ok even tried relocting sensor Trouble codes: P0327
2003 GMC Envoy SLT 4.2L Air suspension VIN: 1GKDT13S33
We replaced the rear air bags about 2 months ago because they were leaking. About a month after replacing the air bags the rear bags will completely lose pressure at any temperature below freezing and will not re inflate until the vehicle is brought into the s...
2004 GMC Envoy XL SLT 4.2L starts in 3rd VIN: 1GKET16S64
trucks starts out in 3rd gear and key wont come out of ignition. I will shift if u manually pull it down to shift it. this sounds like a eectrcial problem just wonderin if anyone has run into same problem. no cdes present as of now
2001 Oldsmobile Aurora 4.0L MIL Lamp on VIN: 1G3GS64C61
Vehicle came in with check light on code p1416 Found front air check valve would not hold vacuum. Replaced valve and front o2 sensor. During testing bank one o2 will go to 0 volts and bank two to 30mv when air injection is cycled on with scanner. No vacuum lea... Trouble codes: P1416

Fixes & Summaries for GM
Fix/Summary Answers
2001 Chevrolet Express 3500 5.7L Hesitation VIN: 1GCHG35R91
First I would like to thank everyone who responded it was very helpful. I had never encountered this type of problem as it turned out it was a combination of fix's. 1) PCM short 2) broken wires in the main harness over the motor. & last but not least the conn... Trouble codes: C0037 (Trans/abs code).
2006 Chevrolet HHR LT 2.4L valves rockers VIN: 3GNDA23P56
found timing had jumped and broke rocker arms, and bent valves, dont know why it jumped but it was more cost effective to install used engine. thanks for all the replies.
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