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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 13, 2014
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Open Help Requests for GM
Help Request Answers
2004 Chevrolet Tahoe LS 5.3L Traction Control VIN: 1GNEK13ZX4
Basically we can not tell if this problem is related. The code refers to a module not switching. Is it the abs module or another module. Alldata has been no help. Any guidance would be appreciated. Thanks, Jim
2009 Chevrolet Impala LT 3.5L Starting VIN: 2G1WT57N79
I have this impala which has an intermitant no crank condition. I cannot get this vehicle to act up in my shop. It has 2 history codes: b3055 and b3060. I really hate to guess because it belongs to my inlaws! they say if you try it a few times, it will crank a...
2003 GMC Sierra 1500 5.3L reduced power
Replaced throttle-body and connector due to reduced power situation. Attempted to program pcm for any and all software updates using mdi and laptop. Midway through programming, error message E4491. Now cant comm with pcm. Verified good battery. Had jump pack h...
2006 Saturn Ion-3 2.4L MIL Lamp on VIN: 1G8AW15B86
Hello everyone and help with this monster. I have this Saturn that came in with no power and the light on. Codes P2127(APP sensor 2 low) and P2138(APP sensor correlation incorrect). I looked at the scan data and saw that sensor 1 always reads higher than sens... Trouble codes: P2127 (accel pedal position sensor circuit 2 too low)

Fixes & Summaries for GM
Fix/Summary Answers
2005 Buick LaCrosse CXS 3.6L Starting VIN: 2G4WE537X5
Based on the replies I received and my own test results, I feel the PCM is the culprit. I believe the faulty PCM awakes when the starter is engaged because of a inductive spike from the starter engaging. Customer wants to go with a used PCM, but I have no way ...
2000 Chevrolet Blazer LS 4.3L abs VIN: 1GNDT13W1Y
Thank you for all the responses...I ended up replacing both front hub assemblies and it took care of it...I was probably overthinking it, but I still don't understand why when looking at the solenoid status on the scanner--all 3 would activate and not just the...
2011 Chevrolet Cruze LT 1.4L MIL Lamp on VIN: 1G1PG5S97B
We determined that the problem was with the Transmission Control Module. Customer elected to take to the dealer to have replaced. Trouble codes: U0101, B1517 (Battery Charging).
1997 GMC K1500 Suburban 6.5L No Start, MIL Lamp on VIN: 1GKGK16F6V
Hal from Montana hit the nail on the head. The "fairly new" pump is worn out, causing the pmd to fail. This customer is planning on selling it soon, and still has not decided if he wants to pay for just the pmd, or sell it like it is. Trouble codes: P0236 (Boost sensor 1 out of range), P0278 (Cylinder 6 balance fault), P0719 (TCC/brake switch B circuit signal low/short).
1999 Pontiac Grand Prix GT 3.8L Misfire, MIL Lamp on VIN: 1G2WP52K2X
Well after 32 responses from some great guys out there we finally have this one fixed! I had already performed some of the suggested tests but tested every other one suggested. I got off on the wrong trail due to the misfires being absent when I unplugged the ... Trouble codes: P0300.
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