× 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 March 25, 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
1999 Buick Park Avenue Ultra 3.8L Stall, MIL Lamp on VIN: 1G3456789X
Not the right vin car is with the customer. Car came in Thursday for SES and bucking problem found code p336. On test drive with scanner noticed that the 18x only went up to 1800 rpms but would follow the 3x pretty much step for step, did not notice any buckin... Trouble codes: P0336
2006 Buick Rendezvous CXL 3.5L Drivetrain?? VIN: 316D147777
Hello there, i have this awd rendezvous that has a noise mostly at 2300 rpm.dont even have to be driving it. In park you can hear the noise it worse at 2300 rpm like a howling sound.but when you drive it at about 1000 rpm it starts and gets alot louder at 2300...
1997 Cadillac DeVille Concours 4.6L Misfire VIN: 1G6KF5299V
good morning all iatn members. I really need some help with this cadi with mis-firing issue.one of my tech replaced engine with used engine and this car runs very well except in the morning first when it starts up. it will badly mis-fire on #5 cylinder and it ...
2003 Cadillac Escalade EXT 6.0L cruise control VIN: 3GYEK63N63
Hey GM techs, I need some help. A street rodder dropped an 03 Escalade ext eng/trans & computer in a 48 Linoln. He didn't install the instrument cluster or bcm but He got everything working except the cruise control. I scanned the pcm & can see the cruise data...
1999 Chevrolet Cavalier 2.2L hyd system VIN: 1G1JC1240X
same as above
2002 Chevrolet Impala 3.4L Hesitation VIN: 2G1WF52E62
This bucks like it is hitting a rev limiter and when it does this the spark advance shows over 50 degrees, if I disconnect the EGR valve the problem clears up. I do not see a lean condition and I have checked the MAF and it appears to function properly and whe...
2007 Chevrolet Silverado 1500 LS 4.8L No Start VIN: 1GCEK19C97
Hi all I'm asking for some help on this one, Fuel pump doesn't run. There is no signal coming to the fuel pump relay. What I'm not sure about is where this signal comes from. I see that they have a fuel pump control module on this truck but don't see where the... Trouble codes: P0230
2002 GMC Envoy SLT 4.2L MIL Lamp on, Reduced Power Light VIN: 1GKDT13S52
I have replaced the APP connector and The Throttle Body connector. I have also load tested the wiring from the APP to the PCM and the Throttle Body to the PCM, the all carry a load using a headlight bulb and the voltage drop was .02V. I am leaning toward the P... Trouble codes: P1523 (Closed Throttle Performance), P1271 (APP 1-2 Correlation)
2008 GMC Sierra 1500 WT 4.3L MIL Lamp on VIN: 1GTEC14X78
vehicle came in with codes p1174, p0128 and p0118. customer states ses light comes on at times and goes off, will at times display engine HOT a/c off and temp gage drops to cold. he had advance pull code p0118 and he replaced the ect. vehicle is now here and h... Trouble codes: P0118
2003 Saturn Vue 3.0L engine VIN: 5GZCZ63B43
We have a 2003 saturn that came in a few months ago. The engine was in 3 boxes of parts and the cu wanted the car put back togeather. He had the car at another shop and they droped a bolt down a plug hole and ran the car not good. They removet the cylinder hea...

Fixes & Summaries for GM
Fix/Summary Answers
1995 Chevrolet Blazer 4.3L No Start VIN: 1GNCT18W5S
Thanks to all! Joseph [...]'antuono hit the nail on the head! The fix was the ignition control module needed replaced! I pulled codes with a different scanner and P1351 had been stored,I believe as a history code. As Joseph recommended, the ignition control module...
1995 Chevrolet S10 4.3L 1-2, 2-3, 3-4, shifts VIN: 1GCCS14Z3R
Hello everyone and great thanks, Brian was spot on with removing the wire from the E.C.M. connector pin f8 This truck now shifts perfectly and the scanner shows 4x4 off constantly(truck is 2wd). Thanks to all! Tim [...]
1999 Chevrolet Corvette 5.7L Parking/Dash lights VIN: 1G1YY32G6X
Hi Everyone, this Vette is on its way. It was the combo switch as must of you said. Done little additional checking, and noticed no voltage out of the switch parking lights wires. Replaced the combo turn signal switch and all is back alive. As far the wiper mo...
2005 Chevrolet Silverado 1500 5.3L Transfer Case VIN: 2GCEK13T05
Several prople have said it has probably worn a fork in the trasfer case from low fluid. It was full of fluid but it was very dirty so I just put in a reman unit from Jasper. Thanks Cliff
2006 Chevrolet Trailblazer LS 4.2L abs VIN: 1GNDT13S56
Every day is a school day! I only voltage dropped one of the two large red wires to the module. Repaired severe corrosion in harness near air pump and all is well! It's always in the last place you look.
2009 Chevrolet Suburban 1500 LT 5.3L Trailer Brake Wiring VIN: 379J116294
Thanks for all the help. I also called the local trailer supply company they agreed that it was above the E-brake pedal. It was behind a module to the right of the pedal. The loom came out of the fuse panel near the firewall. Thanks again for this great res...
1992 Geo Tracker 1.6L starting VIN: 2CNBE18U0N
sry for late update replaced the comp in this geo and she fired right up thanks for all the help guys
2000 GMC Sonoma SL 2.2L abs VIN: 1GTCS1956Y
Cleaned all the grounds on radiator core support and in cab. Test drove 26 miles with no problems.
2003 GMC Yukon SLT 5.3L Front Crash Sensor 1 VIN: 1GKEK13ZX3
Thanks to everyone that replied. Unfortunatly I din't get to retest the vehicle. The customer couldn't leave the vehicle any longer for us to find out what was wrong. Hopefully they will bring it back so I can finish the job. Untill then, its a mystery. T...
2005 GMC Sierra 1500 SLE 5.3L Accessories VIN: 2GCEK19T05
well i hav'nt any more problems with this cluster.i triied to find out at dealer if would be under warrenty,was told no.will keep an eye on it,possible update later.thanks to all for the replies.
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next