Join Now
International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 12, 2009
International Automotive Technicians' Network (iATN) - Members Only
Next
(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 Regal Custom 3.8L No Start, Stall VIN: 2G4WB52L7S
Intermittent problem with car stalling and not restarting. Will restart after some time. Occurs mostly when cold in the morning. When no start/stall condition occurs, customer states that door locks activate locking and unlocking by themselves and dash board l...
View
1995 Buick Regal 3.8L Stall VIN: 2G4WB5215S
customer complains of intermittent stall. will not duplicate for us. MIL not on, but 4 codes present. started on the p1670 quad driver fault code and came up with PCM not grounding relay for cooling fan #2 (fan was not running, but no complaint for that. a/c... Trouble codes: P0117, P0321, P1361, P1670
View
1990 Chevrolet C1500 Silverado 5.7L No Start VIN: 1GCDC14K6L
i have this truck which will not start due to inadequate injector pulse (ground signal from ecm) the ground pulse is there but very weak, power side is batt voltage any time key is on or cranking, i have swapped ecm and complete dist from a running truck to no...
View
1993 Chevrolet Caprice Classic 5.0L Excessive Emissions VIN: 1G1BL53EXP
This Chevy came in for a smog inspection and failed as a gross polluter. I made the repairs listed and confirmed that emissions were good. I had to send the car to a Gold Shield station for certification after repairs and it failed again. I have tried to figur...
View
1996 Chevrolet S10 2.2L Excessive Emissions, Poor Idle Quality, MIL Lamp on VIN: 1GTCS1947T
I got this 96 S-10 with 2.2L that labors badly when accelerating. Only code that set is P0172 fuel system rich bank 1. Oxygen sensors have both been replaced (no change). Doesn't have Maf. Removed the exhaust from in front of the catalytic converter. Still had... Trouble codes: P0172 (fuel system rich bank 1)
View
1997 Chevrolet Blazer LS 4.3L Hesitation, Cuts out VIN: 1GNDT13W0V
Hmm, need some help here guys- got a drivability problem that seems unusuial. When cold first up in the morning- vehicle hesitates when leaving a stop light on a light acceleration. If i accelerate hard it will not do it. Once the vehicle is completley warmed ... Trouble codes: P0300 (random misfire- in fail since cleard menu on genisis scanner)
View
2000 Chevrolet Silverado 1500 5.3L Poor Idle Quality VIN: 2GCEK19T9Y
Hey guys thanks for any help on this one. I am working on a 2000 Silverado with a 5.3. The truck Idles very rough on cold start but clears up fairly quickly. Had code P0300 stored in computer but light was not on (customer states that it came on briefly). Fuel... Trouble codes: P0300 (Multiple Misfire)
View
2003 Chevrolet Tahoe LT 5.3L top end VIN: 3GKEC16T73
Looking for any reason for oil not getting to upper area of engine. Has noise at idle that sounds like a belt squeak, more like a lifter or timing chain slap at 2000 rpm. The noise is the same with belts removed. The noise sounds like it is coming from timing ...
View
2006 Chevrolet HHR LS 2.2L No Start, Cuts out VIN: 3GNDA13D36
good day everyone, I have a 2006 chevy hhr that randomly quits while driving lights up reduced power and engine dissabled when this happens you have no crank,wait 5-10 mins and the car starts and runs.Randomly the check engine light will stay on and we can ge... Trouble codes: P0601, P0340
View
1996 GMC K3500 Sierra SL 6.5L cruise VIN: 1GTHK34F5T
customer states that cruise started acting up a little after new injection pump was put on, then progressivly got worse, well i didn't really think that it was related because you could see the speedo stay at 65 mph while you were still picking up speed then j...
View
2001 GMC Savana 2500 5.0L Misfire VIN: 1GTFG25M11
need help truck came in with misfire and extend crank hard start. could smell the fuel while it ran. performed complete tune since wires were worn through againt dog house. fuel filter still said gm on it etc.. also replaced injector assm with updated design. ... Trouble codes: P0300 (testing and results)
View
2000 Oldsmobile Bravada 4.3L outlet temperature VIN: 1GHDT13W0Y
this one is kind of strange. it came in a couple of weeks ago with cold air coming out of the heater vents. when checking it with tech 2 it had a b0408 code for the temp door actuator, i checked data with tech 2 and it did not want to move, replaced actuator a...
View
2001 Oldsmobile Alero GL 3.4L Misfire, MIL Lamp on VIN: 1G3NL52E61
This car misfires after sitting for a while, but only on cyl #1 and only for 10-30 seconds or so then it smoothes right out. I have swapped plug and wire with others to see if the miss moves, but it does not. I removed upper intake and fuel rail, pressured up ... Trouble codes: P0300, P0442
View
1999 Pontiac Grand Prix SE 3.8L cruise control VIN: 1G2WP12K2X
the two circuits i am concerned with are the cruise disable circuit and the cruise engaged circuits for cruise module to pcm; they both show battery voltage at all times- indicating that the module isn't grounding nor is the pcm; i jumpered a ground to both ci...
View

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Century Custom 3.1L MIL Lamp on VIN: 1G4AG55M4T
Thanks to everyone who took the time to reply. Your input is greatly appreciated. The first thing I wanted to do was to disconnect the DERM module and the ABS module, then retry communicating with the PCM. However, our one tech removed the instrument cluster a...
13
2005 Buick Rendezvous CXL 3.4L cluster VIN: 3G5DA03785
THANKS TO ALL FOR YOUR HELP,THE PCM WAS THE FAULT OF ALL MY PROBLEMS. IT WAS NOT SHOWING UP ON THE MESSAGE MONITOR WITH TECH 2, BUT IT WAS WEIRD BECAUSE IT WOULD SHOW DATA. CALLED PARTS TO GET A PCM TO TRY BUT THEY HAD JUST SOLD THE LAST ONE. WENT TO TECH THAT...
8
1995 Cadillac Seville SLS 4.6L No Start VIN: 1G6KS52Y3S
Please bear with me as this may take a few minutes to read. I have repaired this vehicle by replacing the pcm. The road to determining this was long, as the problem was intermittant. I was only missing injector pulse at certain times, I check for all computer ...
17
1988 Chevrolet Cavalier 2.0L No Start VIN: 1J1CC1113J
Thanks to everyone who replied. I did swap the ecm out and the problem was fixed. It was worth more than the car! Each is own..thanks again...john
13
1996 Chevrolet C2500 6.5L No Start VIN: 1GCGC29F0T
I'm currently awaiting for a module for the injector pump. The information that had been sent was outstanding,especially the one who had sent the accurate diesel site...thank you! keep up all the good work guys & gals, and please stay on the post!! Trouble codes: P1656 (Driver 2 Line 6 Failed).
13
1999 Chevrolet K1500 Suburban 5.7L MIL Lamp on VIN: 3GNFK16R5X
We will call this one fixed!! I would like to thank almost all that responded. The ultimate fix was not clear. I cleaned carbon from both air injection banks, replaced bank #2 valve, inspected pump vacuum supply and trigger to solenoid(both good), and replaced... Trouble codes: P1415, P0410.
9
2001 Chevrolet Monte Carlo LS 3.4L abs light, traction control VIN: 2G1WX12K2Y
Well this vehicle is fixed. Ended up being a wire breaking for the left front wheel speed sensor. Got to act up a lot, then found the problem. Replaced the wheel speed sensor wiring harness with the new AC delco connector. All is well now. Thanks again for the...
5
2003 Chevrolet Silverado 2500 HD 6.0L MIL Lamp on VIN: 1GCHC24U43
FOUND SMALL CRACK IN CANISTER AFTER APLYING PRESSURE DIRECTLY TO IT FROM THE PURGE LINE Trouble codes: P0442.
9
2003 Other GM h2 6.0L Accessories VIN: 5GRGN23U63
I'm sorry to have waited so long to close this request but it is deffinately FIXED! I decided to pursue the front wiper motor & module first since there is a history of failures according to both IATN archives and my GM dealer friend. I first installed a Cardo...
4
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next