× Auto Repair Pros Member Benefits TechHelp Knowledge Base Forums Resources My iATN Marketplace Chat Pricing About Us Join Industry Sponsors Video Members Only Repair Shops Auto Pro Careers Auto Pro Reviews
Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for July 30, 2012
International Automotive Technicians' Network (iATN) - Members Only
(Also Available: All, Asian, Chrysler, European, Ford, GM.)
Vehicle Owners: If you are seeking an automotive repair professional to service your vehicle, visit the iATN Repair Shop Finder.

Open Help Requests for GM
Help Request Answers
2010 Buick LaCrosse CXL 3.0L Sun Shade VIN: 1G4GC5EGXA
Sunroof shade does not close all the way. It needs to travel another inch to be completely closed. We have tried the initialization/teach process for both the sunroof and the sunshade and it still doesn't close. Sunroof works fine. We also removed the sunroof ...
2008 Cadillac CTS 3.6L MIL Lamp on VIN: 1G6DP57V98
this car camer in with the p0100 code. cheched the connector have power, ground, 5 volt reference. all test all data tells you to do except for the test with the factory scan tool because i dont have one. everytyhing was pointing to the maf sensor. replaced th... Trouble codes: P0100
2002 Chevrolet Corvette 5.7L oil pan/ rear main seal VIN: 1G1YY32GX2
Need some help from the corvette mechanics, I have a 2002 that is leaking oil bad from the rear of the engine, can't tell if it is rear main seal or oil pan. when the engine is running the leak starts above the rear cover that hold the rear seal, and runs down...
2002 Chevrolet Avalanche 1500 5.3L Lock Cylinder VIN: 3GNEK13TX2
Vehicle came in for not being able to remove key from ignition lock cylinder. The key was on the start position and you can start the vehicle up with now problem. The problem was that you cannot turn off the vehicle by releasing the ignition lock cylinder back...
2002 Chevrolet Corvette 5.7L cooling system
this motor is in a sand rail been running great for three months. had a over heat problem because of cooling fan connection. fixed that now car uses antifreeze. ran a block check two times passed both times. run pressure check on cooling system losess 10 psi i...
2005 Chevrolet Trailblazer LS 4.2L Spark knock at idle VIN: 1GNES16S15
when hot(210`)spark knock can be heard at idle in gear only,If we add small spray of carb cleaner niose stops instantly but returns when you stop spraing carb cleaner.We have cleaned combustion chamber(motor vac)also pressure flushed injectors,and added 5 gal....
2006 Chevrolet Trailblazer SS 6.0L No Start, Stall VIN: 1GNES13H96
Hi , all, gm. Tech. This suv came in on the hook with no start problem. We knew we have problem with m.a.f sensor before , fuel pressure was zero. So we installed new fuel pump,and mas air flow sensor , start it, run fine test drive it and delivered to custome... Trouble codes: P1516 (Throttle actuator control), P1682 (Ignition 1 switch circuit 2), P2101 (Throttle actuator position performance), P0101 (Mass air flow sensor)
2010 Chevrolet Silverado 2500 HD LT 6.6L MIL Lamp on VIN: 1GC4KVB67A
replaced fuel filter 200 miles ago. removed fuel tank last week it was clean. fuel filter has been replaced several times in the last 5000 miles p0087 has been on several times freev frame showed last time it was at 60 mph & about 98% power pulling a trailer u... Trouble codes: P0087
1995 GMC C3500 Sierra SL 7.4L 2-3 shift, VIN: 1GDKC34N7S
This truck will only act up after being driven on the highway for a few miles. It will shift normally around town, and normally getting on to the highway. After coming to a stop, and then taking off again, it will shift from first to second, then will not come...
1999 GMC Sierra 2500 SL 6.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GTGK29U8X
Customer complaint low power transmission wont shift.Test drive low power low fuel pressure. Pressure at 45 psi. Replaced fuel pump pressure at 60 psi. Checked alternator voltage 12.5 volts low. Check at ECM the same. Check wiring ok. No shorts or grounds. Cod... Trouble codes: P0563 (PCM overvoltage)
2002 GMC Envoy SLE 4.2L Starting VIN: 1GKDT13S02
Came in with intermitent no-crank. Of course we could never duplicate at 1st. We do have a 1 year old Am Interlock breathalyzer system attached. We swapped out the whole unit & had her try it. Acted up next day. We went to her work & verified the starter relay...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick Skylark Custom 3.1L Anti Theft, Headlights, Warning Lights, Cluster VIN: 1G4NJ52M2V
Thank you techs for your replies! It turns out, the instrument cluster was the only fault here. For some reason, I can't explain, the resistor I had installed was causing a problem. I have been able to do this bypass before and all works well but not this time...
2000 Chevrolet Astro 4.3L Cuts out, Stall, Misfire VIN: 1GNDM19W8Y
replaced maf sensor. found that the maf sensor was shorting the reference voltage to the map sensor throwing the map code Trouble codes: P0107, P1107.
2008 Chevrolet Malibu LT 2.4L Poor Idle Quality VIN: 1G1ZH57B58
Thank you to all for replies.Tried driving it to reset idle and when came to stop the idle would come down but once hit gas the idle would go back up.Replace throttle body and still had problem.Ended up reprogramming computer and relearn idle and car is good. Trouble codes: P0507.
1995 Oldsmobile 98 Regency Elite 3.8L stalls VIN: 1G3CX52K9S
thank you for the replies.we did put a pcm in the vehicle,this corrected the voltage issue,but we still had a stall/dying issue with a hot a/c disabled notice on the information center.we decided to replace the crank sensor,this eliminated the dying issue but ...
1995 Pontiac Grand Am SE 2.3L Hesitation VIN: 1G2NE15D4S
The computer grounds were relocated to the engine block, however the engine block was painted cleaning the ground surface. corrected the problem
1999 Saturn SC2 1.9L Stalls VIN: 1G8ZG1278X
Thanks for all the input- Unfortunetly we did not find ant wiring issues thus far. The customer wanted to take it for time being. Its been over a couple of weeks they have not had the fuse blow. We will recommend just running a new power feed to injectors from...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next