× 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 January 18, 2006
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
1992 Buick Regal 3.8L MIL Lamp on VIN: 2G4WD11L8N
Car was towed in during the weekend, customer states, car stalled and would not re-start. Monday Morning battery was dead and frozen. Battery 5 years old, replaced with new, AVR test indicated Alt not charging, replaced Alt, retested, everything ok. (note, Tec... Trouble codes: 26 (Qaud-driver Ckt W/O ECM-Controlled Temp Light)
1994 Buick LeSabre Custom 3.8L Hesitation, Stall, MIL Lamp on VIN: IG4HR52L9R
I need help on this baby as it is driving me nuts. also with i renew a cam sensor but engine would not start with new cam sensor, put back old one but car start. Also with the new cam sensor tachometer on the dash is jumping up and down, as with old sensor it ...
2000 Cadillac DeVille 4.6L trip odometer VIN: 1G6KD54YU2
This caddy has a problem where the trip odometer a and b and the mileage calculator for the fuel system will reset on their own. no certain condition will cause this. i have driven the car for two days and i have tapped on the dash etc. trying to find the glit...
1963 Chevrolet C10/Pickup .0L Steering VIN: 3C144S1385
63 Chevy truck enthusiast. I am working on the steering column on this vehicle. I suspect there is a missing part and need a column breakdown. Also, I need to know how to find the engine size. There are a couple of inline 6cyl. for this year. Can anyone tell m...
1993 Chevrolet Lumina Euro 3.1L MIL Lamp on VIN: 2G1WN14T2P
Hello Fellow Techs, Here is the problem. Car came w/check engine light on. The customer just wanted to check codes and the basics. The car is drivable and will bring back later. For the mean time, I hooked up the scanner and codes came out too many to list. Th...
1995 Chevrolet K2500 Cheyenne 5.7L Hesitation, Stall VIN: 1GCGK29K4S
Good evening GM techs.I have a truck here that is driving me crazy.It is hard to start unless I spray carb cleaner down the throttle body.Once it starts It runs poorly,The IAC opens to approx 100,the map sensor voltage starts to climb,all because it is running...
1999 Chevrolet Tahoe LS 5.7L transmission VIN: 1GNEK13R3X
I hope someone can help me with this, condition happened all at once, fluid level and condition is good, no codes are stored and all scan data reads normal. Reverse is there but you need to press the accelerator quite abit to get truck to move, it feels as if ...
2000 Chevrolet S10 4.3L abs system VIN: 1GCDT19W9Y
hello gm techs. this S-10 pickup can travel for many miles with no problems and then the abs activates any time it wants to when brake is applied. the strange part is it activates at very low speeds, usually under 10 miles an hour and in reverse. cute huh? cus...
2001 Chevrolet Express 3500 5.7L dome lights VIN: 1GCHG39R51
Good Afternoon and Happy New Year. Got this Express van that the interior dome light will not come on when you open the doors. The light will turn on if you turn the switch so pretty much we know the bulb is good.The dome override switch does not work either a...
2002 Chevrolet Trailblazer LS 4.2L Cooling Systems VIN: 1GNDT13S72
This vehicle came in with the service engine light on it had a PO495C code for cooling fan speed high. I looked at the fan and it appears that the fan clutch is staying engaged causing the fan to turn at full speed constantly. This vehicle has the fan clutch t...
1991 Geo Storm 1.6L charging light
alternator light stays dim.With the car running,the alternator white/blue wire sends voltage to restart relay,contac close the a/c & heater relay ,also to shift interlock module.Car came overheating,no fan operation,not charging.Replaced alternator,voltage to ...
2000 GMC Yukon XL 2500 SLT 6.0L hard start VIN: 3GKGK26U2Y
Hello everyone! This unit come to us with a colapsed front fuel tank, tanks contaminated with dirt. Cleaned rear tank, replaced front tank.1 week later fuel cap plugged again, when you remove fuel cap the tank releases a lot of vacuum, I know this is not norma...
1999 Oldsmobile Bravada 4.3L ATC Fuse VIN: 1GHDTJ3NXX
Hello. I Have a Cotinuall Blowing of The ATC Fuse wich Obviously Results in the Front Differential not Being Engaged for the AWD. All Tests I Can Find for Tracking this Down Have Checked Out Including a Voltage Drop which Checked Out. Cant Find any Bulletins o...
1999 Oldsmobile Intrigue GL 3.5L Balance Shaft VIN: 1G3WS52H1X
This car came in with both ticking and knocking noises. After considerable effort, the noise was determined to be in the area of the balance shaft. Upon opening up the valley it was seen that the rear bearing for the balance shaft had come loose and the bearin...
1998 Pontiac Grand Prix GT 3.8L headlights VIN: 1G2WP52K9W
The problem is that the headlights wil fail whenever they feel like it, completely at random & usually at night. So far we have not been able to duplicate the symptom in the shop. Also the customer states that the headlight switch would not cause the lights to...
2001 Pontiac Bonneville SLE 3.8L abs VIN: 1G2HY54K81
this car is showing wheel speed on left front but abs light comes on and shows only hist. code of 1232 not as current and shows no current codes but the abs and trac control lights come on as soon as you spin a tire and stay on i have drove this car with scann...
2003 Pontiac Grand Prix GT 3.8L Stall VIN: 1G2WP52K63
owner said this car will cut off when the temp gauge on the dash reaches 210. it will have to sit for as much as 2hrs. before it will restart. question, is there a feature that will shut the car off if it overheats. I have run the car in the shop for about 1 h...
2000 Saturn SL2 1.9L Poor Fuel Economy VIN: 1G8ZK5279Y
hello all, bosses son brings car in says he is getting 15 mpg. no codes no misses, nice and smooth. scanner shows -30 stft, coolant not going over 160 burps coolant out of overflow at idle. no hc in over flow. o2 sensor switching .18 to .85 nice and smooth. id...

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick LeSabre Custom 3.8L Misfire VIN: 1G4HR5216S
Hello all--- The car is fixed. It turned out to be the ecm. I got many replies. Some said to check harmonic balancer&crank sensor & cam sensor& magnet could come loose on end of camshaft.I did try a new coil in all 3 positions on module & still had the same pr...
1997 Buick Park Avenue 3.8L line pressure VIN: 1G4CW52K2V
well, we decided to pull the trans.with no sign of any trash in the pan.after dissassembly the only thing that stood out was the wear on the 4th cl/hub shaft splines,like they all do. as i was overlooking the torn apart trans. i happen to glance at the vb sp...
2002 Buick Century Custom 3.1L oil in antifreeze VIN: 2G4WS52J42
Hello Friends, please excuse the lag time in this response. The majority of you indicated the Intake manifold gasket was as deep as I needed to go,and that flushing the coolant with non foaming dish soap would get the oil out of the cooling system. I pressure ...
1987 Chevrolet V10 Custom Deluxe 5.7L No Start, Cuts out VIN: 1GCEV14HXH
Found that the new fuel pump was not working proper so replaced it with another one and that fixed the problem .
1990 Chevrolet Lumina 3.1L Excessive Emissions, Poor Idle Quality, Stall VIN: 2G1WL54T3L
Recieved many replies with much helpful info. Thanks to all who replied. Problem was intermittent, as last effort replaced ECM , and vehicle hasn't stalled since.Thanks again Trouble codes: 33 (high map).
1998 Chevrolet Metro LSi 1.3L No Start VIN: 2C1MR5225W
I, as of yet, have not solved the problem with this vehicle. I plan to have another go at it next week, so any help would be more than appreciated. Thank you Frank
1998 Chevrolet Tahoe 5.7L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 1QNEK13R0X
This truck is fixed a special thank you to steve from Alaska. the harness under the front drive shaft cv joint had a broken clip and it bounced the harness into the shaft blowing eng1 fuse. fix was a zip tie so a weak clip wont cuase this agian. reconnected so... Trouble codes: P0102 (maf sensor signal cicuit low freqency), P0340 (cmp sensor circuit).
1998 Chevrolet S10 2.2L Mechanical VIN: 1GCCS144XW
The timing chain tensioner was the problem. It was broke it two pieces causing the cain to be loose. That is a cheezy set up. Thanks for all your help. Several people hit it right on the nail.
1998 Chevrolet S10 LS 4.3L transmission VIN: 1GCDT19X1W
After checking all powers and grounds I removed the pan again and was going to pull the valve body and in the process I noticed that the bolt that retains the pressure control solenoid was loose and the solenoid had pulled out of its bore I reinstalled it and ...
2002 Chevrolet Malibu 3.1L back up lights VIN: 1G1ND52J22
Received a lot of good replies. I checked all of them, but the short ended up being between the source and the switch. I don't know why it would only blow the fuse when moving the selector in and out of gear. I would have thought the problem was between switch...
2002 Chevrolet Cavalier 2.2L No Start VIN: 1G1JC52472
well guys this one was realy just a result of a cheap part. i am not going to bash any manufacturers. the new pump was drawing way to much amperage. a new delco pump was installed and the car has been great. sometimes it just does not pay to try to save a fe...
2003 Chevrolet Impala 3.4L Radio VIN: 2G1WF52E13
This one is fixed, thanks to those who replied to this issue. I went in this morning and checked the harness from the rear to front, looking for something that might have been damaged during the body work. The harness that runs along the pass side was in tact,...
1999 GMC Safari SL 4.3L No Start, Stall VIN: 1GKEL19W8X
well we received many helpful replies, a few said to check the fuel injectors, and a few said it might happen to be related to the anti theft system and it certainly was. way to go!!! at first we couldnt pull any codes because of a faulty ecm. when we got the ...
1997 Pontiac Grand Prix GTP 3.8L MIL Lamp on VIN: 1G2WP1212V
Hey Guys, Thanks for the responses. The problem turned out to be a crack in the housing of the supercharger. The crack was located in the area under the pcv valve, this would explain why it had the same symptom as a 3.8 supercharged engine with a missing pcv v... Trouble codes: P0171 (testing and results).
2001 Pontiac Grand Am SE 2.4L Starting VIN: 1G2NE52T51
Thank you to those who replied I fixed this car by just replacing the ignition lock cylinder and performing the relearn procedure.
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next