× 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 July 29, 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
1996 Buick LeSabre Custom 3.8L converter VIN: 1G4CW53A1T
The customer brought the car in with a cel on scan tool shows po1870 furthur conversation with the customer states they had it at another repair shop. the repair shop installed a new TCC sol. and the Sonnex tcc repair kit according to there invoice.they had it...
1996 Buick Regal Custom 3.8L Poor Idle Quality, idles at 1200 + VIN: 2G4WB52KXT
when car is started it idles at 1200rpm steady, after you press the gas down or put in gear engine idles at 2000rpm and won't come down! there are no codes !!! iac stays at 65 or higher. i thought it might have a vacuum leak but after i smoke tested it nothing...
1998 Cadillac DeVille 4.6L air suspention VIN: 1G6KD54Y9W
Rear level ride inop. This vehicle does not have the constant variable leveing suspension. It has one rear sensor, a compressor, and two rear air shocks. According to the wiring diagram (Alldata) the height sensor closes the yellow wire to ground if the body i...
1984 Chevrolet Corvette 5.7L reverse VIN: 1G1AY0789E
car first came in with a noise in OD unit, I had to send out to have remand, when got remand unit in, it worked good. customer put 200 miles on it and lost OD and reverse felt like it was sliping. I checked the fluid and it was bernt badly. all the forword gea...
1993 Chevrolet Lumina 3.1L Excessive Emissions, Poor Idle Quality, Hesitation, Stall VIN: 2G1WL54TXP
This is the second Lumina I've personally seen with this type of problem, so hopefully somebody else has seen this also and knows the cure -- the first Lumina ended up in the junkyard. Car came in on a hook and would crank but not start. Checking the data val...
2000 Chevrolet C3500 5.7L Electronic VIN: 1GCGC33R6Y
we have this 2000 roofing truck that we rebuilt the trans in, high milage and starting to act up the customer said, didn't find much wrong other than normal wear, replaced clutchs and convertor, installed sonnex boost valve and TCC reg valve. The customer drov...
2001 Chevrolet Astro LS 4.3L shift VIN: 1GNDM19W21
Just replaced a reaction sun shell because of no reverse/ 2nd and no 4th gear. After that it ran fine. Shifts fine while cold. And now I am having MIL on DTC 1870 something about slipping. It comes on at normal freeway driving speeds and then it has a very har...
2001 Chevrolet Astro LS 4.3L Poor Idle Quality, Cuts out, Stall, MIL Lamp on VIN: 1GNEL19W21
I have a 2001 Chevy Astro van. Van running fine, all at once when we came to a stop it would stall. No idle at all. Felt like you turned the key off. No check engine like. It would restart and run fine until you took your foot off gas and then stall again. I ... Trouble codes: P0506 (low idle)
2002 Chevrolet Impala LS 3.8L security VIN: 2G1WH55K42
Vehicle came in with intermittent security light in with no crank, accompanied with intermittant low tire pressure monitor light on. Had history codes B2958, B2960, B3128 in BCM; were cleared and have not returned. Heres the weird part; while scanning BCM with...
1998 GMC K2500 Sierra SL 5.7L 4x4 switch VIN: 1GTGK29R2W
after actuator was replaced the lights still blink when in 4hi or 4low. everything works, 2hi, 4hi & 4low. the only complaint is the lights when in 4x4. this is a farm truck and it is used hard. any ideas? thanks
2003 GMC Savana 2500 6.0L No Start, Stall VIN: 1GTGG25U33
This vehicle was towed in yesterday for a no-start. No fuel pressure or spark. Will crank untill you let off the key start position, then will not recrank untill waiting a few minutes. I felt the ignition switch was the problem, and since it was cheap and easy...
1994 Pontiac Grand Am SE 3.1L Hesitation VIN: G2NW55M8RC
We just installed a rebuilt engine . Last engine overheated and dumped antifreeze into block . Now engine doesnt run tobad . However when in open loop it hesitates a partial throttle takeoff and sometimes will stall when brought to a stop . Engine vacum is low...
2002 Pontiac Grand Am SE 3.4L Misfire VIN: 1G2NF52EX2
This has happened twice. After a cold start the car ran rough and shook. First time customer parked it for the weekend, brought it in Monday and everything worked fine and checked fine. Brought it in again today said it did the same thing but service engine li... Trouble codes: P0203 (Injector control circuit cyl3)
1996 Saturn SC2 1.9L Accessories VIN: 1G8ZH12711
We have a Saturn with wipers that operate only on high. Tested the wiper switch using resistance specs found on mitchell and alldata and the switch fails the test. The thing that bothers us is the specs don't seem right. They give several different specs for t...
1997 Saturn SL2 1.9L Electronic VIN: 1G8ZK5276V
We are thinking of replacing both output and vss sensors with know good parts and seeing what happens as wiring checks ok

Fixes & Summaries for GM
Fix/Summary Answers
1965 Chevrolet vette 327CID cooling fan VIN: 194375S120
My fix for the problem was to install an electric fan behind the radiator. The complete package was about $225.00 and was very complete. I also wired it to turn on with a toggle switch underdash in case the customer felt the need to cool sooner than the temp. ...
1996 Chevrolet Lumina LS 3.1L Stall VIN: 2G1WN52M3T
thanks 4 inf.ran car on dyno with tech 2. watched all pids. found a ac hi pressure switch readings over 4 volts when iac was goin nuts pulled wire from swich and prob gone .going 2 change switch 2morrow.hope it will help u in future.
1997 Chevrolet Blazer 4.3L No Start VIN: 1GNDT13W0V
New day new brain and a little help form I.A.T.N. the problem was a bulk head connector on top of the brake power booster under a cover that some how had come undone.thanks to Dave who had spent a couple of days serching for the same problem. GOOD LUCK TO ALL.
1998 Chevrolet Corvette 5.7L wiper motor VIN: 1G1YY32G9W
This car came back again this time I just dried the board insted of replacing it as sugjested and it worked just fine.When I put it together I rtv'd the seam of the delay board and this seemed to solve that part of the problem.While the car was back I noticed ...
2000 Chevrolet Impala 3.8L No Start VIN: 2G1WF55K8Y
Hey all, Thanks for the replies! It turned out that it was a bad cat. This really through me for a loop because it made no difference with the o2 sensor taken out of the exhaust. But anyway that was it. Thanks again,
2002 Chevrolet Express 3500 5.7L Poor Idle Quality, Cuts out, Stall, Misfire VIN: 1GBHG31R62
Michael [...] hit it on the head. Distributor assembly replacement is the correct fix. Assembly includes, dist, cap, module & rotor. There is a TSB for poor performance, multiple missfires and no start condition. Vehicles effected are 96-2003 5.7ltr Trks. The ...
1999 GMC C1500 Suburban 5.7L brakes VIN: 1234567989
Just like to say thanks for all the great info. Just as everyone thought it to be, this is a normal condition. I hate this, but what can you do. Thanks again to all!!!
1993 Pontiac Firebird Formula 5.7L engine VIN: 2G2FV22P5P
A lot of people said to check for air pockets. We used air lift tool so there was no air. Some said to put on new cap and I already put on a new 18 psi cap. Some said to have radiator flow tested or put on a new pump but the customer declined to go further and...
1992 Saturn SC 1.9L brake hydraulics VIN: 1G8ZH549ON
tried all of the procedures suggested by the tech. line and none made it any better. car stops but i feel it could be better as far as peddle is concerned. car sat for nine months so i am not sure what all could be wrong. customer is just going to use it for e...
Prev (Also Available: All, Asian, Chrysler, European, Ford, GM.) Next