× 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 May 8, 2007
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
2001 Buick LeSabre Custom 3.8L No Start VIN: 1G4HP54K91
Hi to all. I have a problem child here, Customer called and said battery appeared dead on his car, He purchased a battery and installed, No start. Towed to shop. I find it first of all has no interior lights and when key is placed in ignition it said,unknown d...
2003 Buick Rendezvous CX 3.4L MIL Lamp on VIN: 3G5DAO3E13
This vehicle came to my shop with mil on. Pulled codes po440 evap system problem. I have checked system for leaks. No leaks found. One thing i notice is that the gas cap can be taken off still no pressure loss. I dont know if this is because it has check valve... Trouble codes: P0440
2005 Buick LeSabre Custom 3.8L actuator VIN: 1G4HP54K65
Thanks everyone for responding to help. Customer complaining not cooling. Temp hot on driver side and cooler on passenger side. Check temp actuator. seems to be working fine. What am i missing? Jaime
1994 Cadillac DeVille 4.9L Hesitation, Surge VIN: 1G6KD52B1R
1967 Chevrolet Corvette 624CID Headlight Motors VIN: A41E125E87
Hello to all. I have a customer with above said Vette and he is killing himself trying to figure out how to remove the headlight motors from this Plastic Fantastic. I have Motor's Repair Manuals for this thing but all it tells you is how it opperates, not how ...
1988 Chevrolet S10 2.5L Poor Idle Quality, Cuts out, Stall VIN: 1GCBS14E4J
This truck is acting very strange when cold it will start and stall or surge and run rough until it stalls. It seems to run pretty well once it warms up though. One thing I have found is that when its cold and running bad if you unplug the MAP sensor it will c...
1992 Chevrolet C1500 Cheyenne 5.7L Excessive Emissions VIN: 1GCDC14K0N
This Vehicle came in with high emissions. Checked out found bad spray on injectors leaking TBI so replaced and rechecked. Now even higher emissions. Rechecked everything, put 5.0 injectors in, better but will not pass. Good plugs, wires, cap, rotor. No Vacuum ...
1995 Chevrolet Camaro 3.4L regulator spring VIN: 1995CAMARO
Does anyone know how to reinstall the tension spring on the pwr window regulator. I tried to get it close but do not wnat to rivit the new motor to the regulator without having the proper tension. The regulator slipped when I was drilling the rivits out and th...
1997 Chevrolet Express 2500 5.7L speed VIN: 1GAGG25R9V
test drive van and at 55 to 60 mph the speed o drops off and jump up and down checked with scaner at vss is droping off and jumping i replaced vss sensor and is the same tested wires from vss to ecm and test good cannot find any test to do on this system any h...
2000 Chevrolet Express 2500 5.7L rear brakes VIN: 1GCGG25R4Y
We are having trouble identifying the problem with this van's Breaks. It does have hydra-boost. The brakes are very sensitive. On wet streets or gravel road the rear brakes will grab causing the ABS to energize. All the brakes are in good condition. Rear brake...
2001 Chevrolet Impala LS 3.8L Traction Light on VIN: 2G1WH55K91
The traction active light in the message center comes on and car acts like it is in traction control. It will do this a few times, once or twice a day. It is only felt when leaving from a stop and doesn't do it all the time. Seems to only happen after the car ...
2004 Chevrolet Aveo LS 1.6L timing belt bent valves VIN: KL1TJ52624
The belt was not broked but teeth were all gone at crankshaft. Vehicle has 58959 miles and the recommended change time is 60000. It has bent valves in 3 of the 4 cyl and customer is really disappointed. I saw a tsb that Chevrolet wanted belts returned if betwe...
1999 GMC Jimmy SL 4.3L No Start VIN: 1GKDT13W3X
Hello, 99 Jimmy Pass-key code sets in ecm, that is the only code that will set. It starts and stalls as it is designed to do with the anti-theift. I have gone thru the BCM with wiring diagrams and connector pin out chart and all powers and grounds are correct.... Trouble codes: P1626 (pass-key signal not received)
2001 GMC Sierra 1500 HD SLE 6.0L drivetrain VIN: 2GTEK69U31
hi, i have a personal 2001 gmc sierra c3 awd pickup [same as awd denali drivetrain] that i just recently bought. after i drive approx. 20 miles and the drivetrain warms up, if i go to turn into a parking space, it will jerk and knock underneath like it is in 4...
1998 Pontiac Firebird Firehawk 5.7L Starting VIN: 2G2FV22G5W
pcm code po1626 theft deterent sys cutting out starter relay changed ign swith & bcm and still have same problem

Fixes & Summaries for GM
Fix/Summary Answers
1992 Buick Park Avenue Ultra 3.8L Cuts out, Stall, MIL Lamp on VIN: 1G4CU5317N
Well after having it die again, replaced the computer with a used one and still had a intermittent stall, I pulled the dash apart and found a remote starter installed with a pretty good hack job. I removed all the wire's and repaired them and haven't had a pro... Trouble codes: 22 (tps sensor circuit low), 67 (cruise controll switch bad).
1995 Chevrolet K2500 Cheyenne 7.4L Clutch VIN: 1GCGK29N0S
Thanks for all the replies. There were a few I hadn't thought of such as the thrust bearing wear in the crankshaft. The strange thing is that this vehicle seems to have fixed itself overnight. I suspect that maybe there was some air in the lines that worked it...
1996 Chevrolet Monte Carlo Z34 3.4L engine temp gauge VIN: 2G1WX12X5T
Thanks for everyone who replied.I decided to remove the pump and compare it to a factory pump and the impellers were different. The aftermarket pump impeller was made of stamped steel and the factory pump had a cast impeller with alot more vanes.Also the parts...
1999 Chevrolet Lumina 3.8L Temp guage VIN: 2G1W52K4X9
Well bit by an aftermarket part. NAPA no less. I got a coolant temp sensor from the dealer and everything is fine. Pull your hair out now. :)
2000 Chevrolet Malibu 3.1L Stall, Misfire
customer finally came in and opted to do intake gaskets first.runs good after repairs.thanx for all the help.sorry it took so long to reply.customer had to gather his money.still advised him to do injection cleaning.
2001 Chevrolet Monte Carlo SS 3.8L lights VIN: 2G1WX15K51
Thanks for all the help. The body computer was the culprit. Replaced the body computer and all is well
1993 GMC K1500 Suburban SLE 5.7L No Start, Cuts out VIN: 1GKFK16K5P
Thanks gents. I don't know where my head was. It was probably the 14 hour trip home from Florida the day before I started looking at this job. Thank you again. Bruno
1993 GMC C1500 Sierra 5.7L Misfire, backfires
Henry [...] is our winner. Gene Miller suggested I call the dealer and tell the Tech to check the exhaust manifold. What could be wrong with it, its brand new (Hencho en Mexico) right? so the tech pulled the manifold off the head and dropped a nickle in it and...
2002 GMC Sierra 2500 HD SL 6.6L Starting VIN: 1GTHK291X2
Thank you all. Removed the steering column cover, then drove it around and home for the evening. the next morning the situation reared it's ugly head. Tapped on the switch, engine cranked and started. I did this a few times. Replaced the switch, as I was now c...
1998 Oldsmobile Bravada 4.3L Power Steering VIN: 1GHDT13W1W
The customer chose to not fix the vehicle. Our final diagnosis comes down to this...the valving in the steering gear is causing the noise/vibration in the hydraulics. We eliminated the pump and fluid issues seeing as we were not experiencing any cavitation or ...
1986 Pontiac Fiero SE 2.5L Clutch VIN: 1G2PF37R4G
Thanks For all the great info. Once again you all come through. Bleeding the clutch and adjusting the slave cylinder bracket. Helped tremendously the engaugement is still not 100% where I like. But the vehicle shifts smoothly and fully engauges and disengauges...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next