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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for June 18, 2005
International Automotive Technicians' Network (iATN) - Members Only
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Open Help Requests for GM
Help Request Answers
2001 Buick Regal LS 3.8L Magnasteer VIN: 2G4WB55K21
Hi Guys, GM Magnasteer gotta love it. The flow charts in both Alldata and Mitchell both suggest, Replace with good part. Then ask “Did you find and correct the condition?" What crap. Anyway… Kentmore tools has a Magnasteer training video J44721-VID. I’ll be ...
1995 Cadillac DeVille 4.9L level control VIN: 1G6KD52B7S
This vehicle came to me this first time, never been here before. The back end is up high and rides bouncy. The pump is inoperative and is not releasing pressure. There are no codes, and I can't find the correct procedures to diagnosis. I think I have a bad pum...
1997 Chevrolet Tahoe LS 5.7L MIL Lamp on VIN: 1GNEK13R7V
Hi GM techs,we have these codes that keep coming back. P0172 and P0175.This has been a good truck til now at over 200k miles.Every time it shows these codes it's always at highway speeds, closed throttle(on decel) and the fuel trims are as follows. LT FT bank... Trouble codes: P0172 (system too rich bank 1), P0175 (system too rich bank 2)
1999 Chevrolet Venture 3.4L Convertor VIN: 1GNDU06E2X
Hi fellow IATN technicians, this van sets this code described as "Torque convertor clutch stuck on" and exibits drivability problems consistant with a locked up convertor. The van has never done it for me, but after replacing the convertor solenoid last time, ...
2003 Chevrolet Trailblazer North Face 4.2L MIL Lamp on, abs lamp on VIN: 1GNET16S03
sorry this info us scarce (my mt2500g with 5.2 will not load 2002-2003 database?) i pulled this code with global obd II, and of course i cant run any evap test with it, customer has had the zone turn of mill and it returns after a couple of days , i cleaned th... Trouble codes: P0440
1999 GMC Yukon Denali 5.7L Rear Brakes VIN: 1GKEK13R1X
This vehicle belongs to a regular customer at our shop, and we have done all related repairs on it for some time. After having maintenance brake work done a short time ago, it returned last week with a bad vibration when the brakes are applied. Vehicle runs an...

Fixes & Summaries for GM
Fix/Summary Answers
1992 Buick Roadmaster Limited 5.7L Surge VIN: 1G4BT5378N
I confirm that the solenoid on that application is an ON-OFF type... My valve is a Positive type, even if there is a 'N' stamped on it! Ordered GM [...] in the box, even if GM has no idea about this part number lolll. Car...
1997 Buick Park Avenue Ultra 3.8L No Start, Cuts out, Stall VIN: 1G4CU5217V
Thanks to all who replied. As I, and others thought the pump was the problem (along with equipment). With my low amp probe I could watch the pump run and then flatline, and car would stall out. So I ws pretty sure pump was shutting down. So I installed new pum...
1996 Cadillac DeVille 4.6L tcc code p0741 VIN: 1G6KD52Y6T
Thank you to everyone for the replies. The majority went toward replacement or rebuild. Customer took some time to check his options (I suggested he go to any trans specialist for second opinion, not sure if he did). He considered trading for a pickup, but fig...
1997 Cadillac Catera 3.0L Poor Idle Quality, Misfire, MIL Lamp on VIN: W06VR52R0V
ended up being the exhaust cam was one tooth off.Thanks for all the help. Trouble codes: P0300, P0301, P0303, P0305.
1988 Chevrolet S10 Blazer Sport 2.8L Hesitation, Stall VIN: 1GNCT18R2J
I would just like to thank all who replied finally got it right, about 3 posts told me to remove the throttle body and check the map sensor port did that and found the port to be about 75% blocked clean it out and the vehicle runs absolutly great. thanks!
1988 Chevrolet P30 Motorhom 7.4L Engine VIN: 1GBKP37W4J
Hi everyone! I am sorry it has taken so long to close this request. I finally got to the bottom of the problem. I recieved a lot of helpful responses. Most everyone mentioned carbon build up. I ended pulling the head on the passenger side to check for that and...
1999 Chevrolet Tahoe LS 5.7L transfercase VIN: 1GNEK13R9X
thanks for all replies. i sent the car to dealer for reflash computer. everything working great now. thank you again for all your help.
1994 GMC Safari SLE 4.3L backfires VIN: 1GKDM15ZXR
Thanks to all that replied. Special thanks to Tim [...]. and Romain who clued me into the fact that a shorting 'tach' wire will hold the coil on too long causing overheat. This van happened to have a remote starter installed in it and the tach wire had been routed...
1998 Pontiac Grand Am SE 2.4L Mechanical
A bunch of you were right, I had to release the tensioner to take up the slack, by smacking on the tensioner, there is no button to push on the old one or the new gm one, but I could see that it jumped out of its bore to apply more tension, after that , no noi...
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