× 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 June 23, 2005
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
1984 Chevrolet S10 2.8L No Start VIN: 1GCCS148LE
This should be very simple, but something is fooling us. WE have checked for wave form on lab scope for pup and get good waveform. Module has 4 terminals: +, coil and 2 for the pup. If you put fire to + , hook up coil terminal to coil side Neg of coil and turn...
1988 Chevrolet C1500 Cheyenne 5.7L Cuts out
This truck came in with engine cuts out and backfires under load. sometimes it runs good for a long time before acting up.Other times it will act up right away. No codes.Fuel pressure stays at 14 pounds even when cutting out and backfiring. BLM and Integrator ...
1994 Chevrolet Camaro Z28 5.7L Poor Idle Quality, Surge VIN: 2G1FP22PXR
The customer came in with a complaint of a very bad engine surge when he stops at a light. He also mentioned that under load the car dont accelerate smooth and misfires. As soon as we started to check the car we found that the cly #2 is not working at all and ...
1996 Chevrolet K1500 Cheyenne 5.7L 3rd gear VIN: 2GCEK19M0T
Transmission was rebuilt by an other shop and was leaking and slipping. customer brought it to us and we in turn rebuilt it again, worked well for about a 1 day or so and 3rd gear failed again all other gears were ok. line pressure was good, all solenoids were...
1997 Chevrolet Lumina 3.1L MIL Lamp on VIN: 2G1W152MOV
Hi People, I plugged in my trusty Snap On scan Tool pulled up a code Po440 (evaporative emissions fault) acording to the trouble shooter a lot of things can set this code, the most comon cause is a gas cap leaking or loose fitting ... so I went to the freeze ... Trouble codes: P0440
1998 Chevrolet K2500 Cheyenne 5.7L shifts and pulling VIN: 1GCGK24R8W
Hello guys got one here thats stumping us. We got this 2500 on the hook and they said that it quit pulling this is an oil feild truck and has seen its share of abuse. We proceded the next day to bring it in and found that it pulled its self in so we looked at ...
1999 Chevrolet K1500 Suburban 5.7L steering wheel VIN: 1GDFK16R0X
I brought this one in after hours for a friend, (always a mistake) Vehicle had terrible brake shimmy, front rotors warped and heat cracked, left front caliper dragging. Replaced calipers and hardware, pads and rotors, clean and adjust rear brakes and complete...
2000 Chevrolet Monte Carlo SS 3.8L Cuts out, Stall VIN: 2G1WX12K5Y
Hi group, we are having a difficult time with a 2000 Chevy Monte Carlo SS. 3.8L front wheel drive. the car starts fine during intial COLD but after 10 minutes idling or drive, it stalls and, never could started again, unless we try few hours later,went test dr...
2001 Chevrolet Blazer LS 4.3L Transfercase VIN: 1GNCT18W71
We have a vehicle that seems to go into 4WD high while going down the road. It has also gone into 4WD low on occasian. This is very hard to duplicate. The switches seem to be working properly. We feel this is either a Transfer Case Shift Control Module or an...
1998 Geo metro 1.3L Hesitation, Misfire VIN: 2C1MR222XW
hello all, I have this metro in here and the problem with this is tha if you are in 5th gear and going about 35 and give the vehicle 3/4 to full throttle it will start hesitating and missing adn will throw code p0300, random misfire. It feels like an ignition ...
1996 GMC C1500 Sierra SL 5.0L MIL Lamp on VIN: 2GTEC19M9T
This customer has been coming back every couple of weeks with the same complaint of the check engine light on. Always the same two codes even after replacing the egr and tps with delco units. I have inspected the pcm for water damage, continuity tested the wir... Trouble codes: P0122 (TP sensor circiut intermittant low voltage), P1122, P1406
1992 Oldsmobile 88 Royale LS 3.8L Excessive Emissions, Hesitation, Cuts out, Poor Fuel Economy VIN: 1G3HY53L0N
Thank you for your help. This is my personal car I just bought about 6 months ago. I drive this car about 20 miles each way to work of which 18 miles are interstate. Check engine light comes and goes but it is pretty steady when I am cruising. When I go to g... Trouble codes: 14 (Loss of O2 signal)
1997 Oldsmobile Achieva S 3.1L anti theft syst. VIN: 1G3NL52M1V
I get code 1629 (antitheft system activated) we replaced ignition lock and sensor.Still,no start. I was reading some fixes and replies but I did not get a very clear picture as to how to bypass system if possible. Could someone describe as clearly as possible ...
2000 Oldsmobile Silhouette Premiere 3.4L Surge, Cuts out, Stall VIN: 1GHDX13E2Y
when just driving along vehicle will start to buck and try to stall enough to where the battery light will come on for a brief moment and then engine will catch again.it will do this for a couple of blocks and then be fine ofr the rest of the day or act up aga...
1994 Pontiac Grand Prix SE 3.4L No Start, Poor Idle Quality, Cuts out VIN: 1G2WJ12X2R
Hello Group, Thank you in advance for any help with this one. This car came in with the complaint of cutting out while driving and stall or dying while driving. When the problem occurs, it feels as if the key is simply being turned off! No codes in history ...
2000 Pontiac Grand Prix SE 3.1L pressure selonoid
i have this 200 grand prix that came inti the shop with a p1181 code for the tranny and also it had a shudder on takeoff .so i replaced the pressure selonoid and now it will hardly pull itself,you have to really give it the gas to go.so i figured i received a ...

Fixes & Summaries for GM
Fix/Summary Answers
1996 Buick Regal 3.8L Cuts out, Stall VIN: 2G4WF5211V
Thanks alot for the info. Sure enough Dan sent me an email asking about fuel pressure. I had checked the relays, which were operational, but did not realize there is a resistor behind the battery inside the fender that works along with them. This is the same a...
1998 Buick Regal LS 3.8L air selector VIN: 2G4WB52K3W
Thanks to all!! Once I had the correct info... easy fix! The system is run by vacume. I saw what looked like an electric blend door motor on the drivers side of the hvac box. Once everyone told me it was vac. operated I found the line near the battery broken. ...
1995 Cadillac DeVille 4.9L sss VIN: 1G6KD52B7S
thanks guys for your help on this repair. we install a relay inbetween the system and we have a fix. thanks again for your help fred
1995 Chevrolet Corvette 5.7L driveline VIN: 1G1YY32P9S
I could not find the problem. I tried all of the suggestions but found nothing. Thanks for the help.
1999 Chevrolet Silverado 1500 4.8L Instrument Cluster VIN: 1GCEK14V9X
I was able to locate a wiring diagram that simplified this one pretty quick. There are 4 power wires to the cluster, 1 orange, 2 pink and a brown. The pinks and the brown come from fuses in the passenger compartment, however the orange comes from the radio fus...
2000 Chevrolet Silverado 1500 5.3L oil pressure VIN: 1GCEK19T5Y
We received many helps to what may be the problem. We pulled the oil pan again, and did not find any problems with main or rod bearings. After spending much time on the phone with many techs, and with the customer, we opted to pull the motor and install reman ...
1998 GMC K1500 Sierra SL 4.3L Misfire, MIL Lamp on VIN: 1GTEK14W9W
problem still pending- replaced 2 injectors with some improvement, checked for vacuum leak with smoke machine as customer had replaced his own intake gasket and found none, vacuum guage steady, but still suspect of leak. Some tech's had mentioned modifying hol... Trouble codes: P0300 (Multiple cylinder misfire).
2000 Oldsmobile Intrigue GL 3.5L cruise control VIN: 1G3WS52H0Y
Found ign switch was not putting power to fuse box at times at times there was power but while driving lost power custmer did not replace switch they will replace later time thanks for your help
1989 Pontiac Grand Am LE 2.3L engine oil VIN: 1G2NE14D1L
Hi Guys, I want to thank everyone for their help; and iatn for the service. You came up with suggestions that I would not have thought of particularly the water pump. After checking the head, and block thoroughly; upon chasing the head bolt threads in the bloc...
1996 Pontiac Grand Am SE 2.4L radiator VIN: 1G2NE12T8T
After having so much trouble bleeding the air out of my sons car I finally broke down and bought an airlift. Within 10 minutes air was gone and vehicle was full of coolant at the right level!! In addition the system was leak checked. No head gasket problem. I ...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next