Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for September 1, 2009
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
1998 Buick LeSabre Limited 3.8L temp control VIN: 1G4HR52K2W
Hey there, I haven't asked a question before, but this car has me stumped. Car came in for erratic heater/ a/c operation & outside temp jumped from 10 deg C to 90 deg C at any given time regardless of actual temp outside. Replaced temp control unit because old...
2000 Buick Regal LSE 3.8L instrument cluster VIN: 2G4WB55K9Y
I am replacing the instrument cluster with a new unit, because the mileage indicator burned out. The problem is, I need to extract the GM part number with our GM Tech 2. We do not know how to do this process. All I was able to aquire was: "cluster number 28, s...
2000 Cadillac DeVille DTS 4.6L unknown VIN: 1G6KS55Y71
When turning this car to the right & accelerating or going in a continuos circle to the right, the car makes a tinny rattle noise that appears to be coming from the left front of the car, near the grill. The sound is very similar to a bad cv boot rattle & pop ...
1994 Chevrolet Caprice Classic 4.3L Misfire VIN: 1G1BL52W2R
hello and thanks to all for your help; this simple chev is driving me , customer brought car in about a month ago said change the plugs, plug wires and filters, it needs a tune up, so i did and asked about replacing dist cap and rotor customer declined that pa...
1998 Chevrolet Tahoe 5.7L brake lights VIN: 1GNEK13R4X
No brake lights, put in new brake light switch at the peddal, switch works properly but no brakes lights to rear, missing a relay in the fuse box, not even tabs for it in the box. I cant find a relay and the dealer says they dont list one for this truck. Has a...
2001 Chevrolet Silverado 2500 HD 6.6L MIL Lamp on VIN: 1GCHK29131
Cust. states that when pulling a hill with a trailer, looses power, goes to a idle or he can feather throttle to keep the truck moving. Has code p0234 - turbo over boost code. I replaced boost sensor, with no change. Wastegate and actuator working properly. Fr... Trouble codes: P0134 (turbo over boost)
2006 Chevrolet Suburban 1500 5.3L rear latch/rear ac VIN: IGNEC16Z46
hello friends, having trouble with a very intermittent fuse that blows. we have not been able to duplicate the symptom. the fuse that powers the rear ac and the rear hatch will blow. i, am not sure if its in the rear ac system or the rear hatch circut. has any...
2006 GMC Sierra 1500 SLT 5.3L Cuts out, MIL Lamp on VIN: 1GTEK19BO6
truck came in with check eng light and complant of no power would not accelerate. problem went away but has codes. p0102 p1516 p2108 u0107. cleared codes seems ok has any one seen this before. do not want to release ot only to have it back. Trouble codes: P0102, P1516 (electronic throttle module falt), P2108 (tac module fault), U0107 (loss of comunication with throttle actuator)
1996 Oldsmobile Cutlass Supreme 3.1L brake pedal VIN: 1G3WH52M1T
This car has an intermittent soft pedal and only when the car is running. With the engine not running the pedal is normal. When you drive the vehicle sometimes the pedal goes to the floor and if you pump it up it gets firm again. I have blocked off each wheel ...
1999 Oldsmobile Alero GL 3.4L no 2-3rd shift VIN: 1G3NF12E9X
customer complaint-no 3rd or 4th gear. road teat verify 1st and 2nd gear operation. does not shift any higher. suspect "B" solenoid or 3-4th solenoid in valve body of 4t40E-4t45E electronoc automatic. Does anyone else have further information to add on this pr...
1997 Pontiac Sunfire SE 2.2L rf speed sensor VIN: 1G2JB5242V
hey PONTIAC/GM guys im in a bit a bind here hoping we can work together to figure this one out the 97 sunfire came in with C1233 code for the RF speed sensor, so we looked at teh wiring and decided the sensor needed to be replaced, so we did. all was working ...
2005 Pontiac GTO 6.0L Poor Idle Quality, Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 6G2VX12U85
Has this problem intermittently, CEL comes on, Safety Mode reduced performance displays in the DIM. Let the car sit off, remove the key, wait 5 sec and runs fine till it does it again. The problem is very intermittent. Any thoughts?? This is for a friend of mi... Trouble codes: P1516 (No text from my scanner), P2135 (TPS A-B voltage corrolation), P2178 (Throttle acutator Idle position not learned)
1995 Saturn SL2 1.9L engine VIN: 1G8ZH5282S
Hello techs, Thank you for your replies. To start with, I believe this car is an sl 2 because it is dohc. please inform if wrong. I have purchased this vehicle from the customer,she is done trying to deal with losing so much oil. Many gaskets have been rep...

Fixes & Summaries for GM
Fix/Summary Answers
2004 Buick Rainier CXL 4.2L Hesitation, Poor Fuel Economy, MIL Lamp on, idle surge sometimes VIN: 5GADT13SX7
Hey Guys, The customer finally decided to fix his car and brought it back in. Thanks to everyone who replied. A lot of guys mentioned MAF sensor, but this vehicle had a MAP sensor instead, which is easier to test in my opinion, and it was fine. Code P060... Trouble codes: P0606 (pcm internal processor fault), P2119 (throttle closed position performance).
2004 Cadillac Escalade 6.0L Hesitation, Stall VIN: 1GYEK63N54
The customer has not returned for the repair. I called him so I could retest it but he said he wanted to wait until the MIL light came on again. I beleive Eric from South Dakota hit it on the head : a broken wire in the insulation at the throttle body connecto... Trouble codes: P2135 (TPS 2 Sensor Disagrees With TPS 1 Snsor).
2001 Chevrolet Silverado 2500 HD 6.6L engine VIN: 1GCHK23191
thanks to all that replied, finally fixed and confirmed the fix. it tunrns out it had 2 different problems, i pulled the tank because after an hour of driving vaccum on test port would climb to 20hg, i found screen partialy plugged up wich would explain dying...
2000 GMC Jimmy Diamond Edition 4.3L sdm module VIN: 1GKDT13W8Y
Sorry i havent closed this request till now but i have been waiting on a NEW SDM the problem is...ITS ON NATIONAL BACKORDER!!And still have not recieved it.THANK YOU TO ALL WHO TRIED TO HELP OUT W-THIS DEAL.I ended up working with a man from IDENTIFIX and we g...
1996 Oldsmobile Cutlass Ciera 3.1L DLC pin 16, EBC module, TR switch VIN: 1G3AJ55M1T
The fuse was easy to gain access to once the glove box was removed. It was covered with tape (factory)and was near the chime module. Thanks for the help.
1994 Pontiac Grand Am SE 3.1L Misfire VIN: 1GZNE55M0R
Well guys, I was out of work sick for a week, and lucky me, this p.o.s. is here waiting for me when i get back. Apparently during my initial testing, I never disconnected the bulkhead (12 pin) i think , connector to the injectors. I came to my initail diag by ...
1997 Pontiac Firebird 3.8L No Start, Stall, MIL Lamp on VIN: 2G2FS22KXV
This is the thing I love about Gm cars 1 concern 3 problems, we replaced the fuel pump for being out of spec the intake gaskets wer gone and the pressure reg valve was leaking thanks for all the help Trouble codes: P0300.
2003 Pontiac Bonneville SLE 3.8L Windsheild Wipers VIN: 1G2HY54K43
Thank you for all replies on wiring checkouts. We checked all ground, pulled the loom no moisture, no shorts. We replaced factory motor again and seems to be working fine at this time. I hope not to see it back in a month. Thanks again. Dan
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next