× 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 October 3, 2011
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
1995 Buick Riviera 3.8L PCM Failure VIN: 1G4GD2216S
We have been working on this Riviera for years, and it still is in good shape.The problem has been repeat PCM failures. First we had a start and stall problem with a code P0101. 2nd we had no alternator output. 3rd we had no cruise control. PCM replacement has... Trouble codes: P0101
2007 Cadillac DTS 4.6L right power window VIN: 1G6KD57YX7
The right passenger window works intermittantly. Replaced driver's master switch. Works intermittantly on both switches. No dtc's in bcm.
1993 Chevrolet S10 Blazer 4.3L Surge VIN: 1GNCT18Z8P
Hello fellow Techs. This S10 Blazer has been in and out of several shops and almost every thing has been done. The condition is @ 37 to 40 mph and about 1700 rpm you feel a slight surge condition. You can power through it and you don't feel it before or after ...
1996 Chevrolet Astro 4.3L No Start, no serial data VIN: 1GNDM19W2T
this van will not start in moist conditions. it however will not run now. found there to be no fuel pressure. checked for good connection on all components ie relay center, fuel pump. all good. no power going to pump (2 sec pulse or on crank.). oil pressure se...
2000 Chevrolet Malibu 3.1L 7x crank VIN: 1G1ND52JOY
no signal at 7x crank signal to ICM. New sensor, harness to ICM Ohmed good no spark no start. 24x sensor data consistant need to find signal to start sequence all live data within specs ecept 7x software has b een updated(flashed)
2000 Chevrolet K3500 5.7L No Start, 6 Ignition Modules VIN: 1GBJK34R3Y
This is my first go around with this truck - Since new engine was installed 2 months ago, the truck has gone through 6 ignition modules. It has new secondary components, cap rotor wires plugs & coil. Has solid ground at module terminal C. Charging voltage is 1...
2003 Chevrolet Silverado 2500 HD 6.6L dome lights VIN: 1GCHK23103
left rear door ajar on all the time dome lights stay on also checked lf rear door sw with ohm meeter and check good-door switch is open when door is closed and ground or closed when door is open the rt rear door checks the same if i check volts with a meeter o...
2005 Chevrolet Astro 4.3L Blower Motor VIN: 1GCDM19X35
Blower motor not working on high. Checked out all components and no other problem found. Power going to harness but not going to blower motor on high.
1991 Pontiac Firebird 3.1L #4 Cyl VIN: 1G2FS23TWM
This one has me stumpted,engine runs rough,cyl balance 0 rpm drop on number 4 cyl all other cyl's are ok. As stated compression test on #2 145 psi #4 155 psi #6 140psi All new injectors, replaced cyl#4 injector 3 times. Noid light shows good signel on all inje...

Fixes & Summaries for GM
Fix/Summary Answers
1972 Chevrolet El Camino 5.7L Misfire
Ok so the old addage goes keep it simple stupid.You guys were spot on with the vacuum leak .It wasn't external the trans modulator was pulling fluid into #5 and 8 causing the miss. It wasn't enough to smoke but enough to cause a miss.The pcv was also bad and t...
1996 Chevrolet Camaro 3.8L Excessive Emissions, Misfire VIN: 2G1FP22K7T
I could not find solid evidence of what was causing missfire on this one. I did do cylinder leakage test on #1cyl - only 8% leakage. I swapped wiring from #1 and #3 injectors, miss still stayed on #1. Like a lot of you I feel like it had to be a valve train pr... Trouble codes: P0300.
2004 Chevrolet Malibu 2.2L ignition lock cyl VIN: 1G1ND52F84
Thanks for all the replys. Most suggested what I had already done, which was to lightly tap on the key while turning...I should have mentioned that when I posted. I have done that many times before on other cars and it worked great. Not sure what this custome...
2004 Chevrolet Silverado 2500 LT 6.0L air bag light VIN: 1GCGK23U04
I posted this and cust was supposed to come back, however, he has not as of yet returned. as he and his whole family are customers, I am sure will see it again.. as for your replies, thank-you, but cannot apply them at this time. pretty sure that it however on...
2005 GMC Sierra 2500 HD 6.6L Black smoke VIN: 1GTHK23295
I can't explain why but killing #1 cylinder with snap on modis and a borrowed tech II would stop the engine smoking. replaced injector and problem persisted. After strugling for three weeks to find out problem with #1 cylinder and found everything to check out...
1995 Pontiac Firebird Trans Am 5.7L Misfire
ok, so a lot of you thought it was the distributor. so after the appropriate testing and your input i decided to go there. after removing the cap i could see where it was cross firing. replace and rotor and it runs like a champ again. thanks
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next