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Prev Professional Automotive Repair Technical Discussions for July 16, 2010
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Open Help Requests for GM
Help Request Answers
2002 Buick Rendezvous CXL 3.4L compressor VIN: EX2S540929
Air conditioning wont run. Control head displays and modes are fine. Even displays cabin temperature (indicating the cabin sensor mounted in is responding) Code P1189 present and refuses to clear even when oil pressure wire is open or grounded. Dealer says thi...
1994 Chevrolet K1500 5.7L Misfire VIN: 2GCEK19K9R
This truck initially came in for a "miss" at idle. Found that the RPM on the scan tool was erratic and that the distributor reluctor wheel was swollen and cracked. Installed a new distibutor (aftermarket--Dorman/NEW) and the problem seemed fine. Customer took ...
1995 Chevrolet S10 4.3L Blend door VIN: 1GNDT13W1S
Hello .Customer says needs ac.So i hook up ac machine it had about 5 oz of freon so i charged it with dye and oil pressures look good but the temp inside car is warm i looked on Alldata and it does not show much on how the hot cold door works. i do have a ...
2001 Chevrolet Corvette 5.7L instrument lamps VIN: 1G1YY22G01
Only the gauge lamps are inop at all times. all other dash lamps (IE radio, odometer, hvac, window, hud, etc. ) come on and are controlled by dimmer. This problem was an intermittant up until shortly before we did module repair. All of the available illuminati...
2006 Chevrolet Impala LTZ 3.9L No Start, MIL Lamp on VIN: 2G1WU58106
This is a good one.Weve had this car here more than once.The first time it was towed in,customer said she was driving down the road and all her gauges were going crazy and it shut off.when we got it the battery was dead.We charged the battery and the vehicle s... Trouble codes: P1629
2003 GMC W4500 Forward W4S042 4.8L wipers VIN: J8DC4B1473
Does anyone have a wiring diagram for the wipers on a GMC W4500. They are inop, If I power the motor it works, ther is a relay/module that clicks when I turn them on that says wiper control. If anyone has a diagram, that would help tremendously. Alldata no hel...
2004 GMC C4500 Topkick C4C042 6.6L Starting VIN: 1GDE4C1284
I have a 2004 Duramax with a no start condition. The truck cranks for about 2 seconds then looses power to the starter until the key is released and then it cranks for another 2 seconds each time the key is turned. It has a fault code for no crank signal, but ...
2006 Pontiac Torrent 3.4L Evaporator VIN: 2CKDL73F06
I have this Pontiac Torrent here that has great cold a/c untill a long drive cycle. When the air is run for a long time it turns warm (evaporator freeze up, I think). When the car is stopped and restarted several hours later the air works fine again. I found a...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Cadillac DeVille 4.6L Poor Idle Quality, MIL Lamp on VIN: 1G6KS52YXV
Thanks to all that replied. This intake did not have the rubber boot, but it did have the back fire valve. By replacing the intake with a new gasket fixed the problem. Thanks again. Trouble codes: P0122.
1995 Chevrolet K1500 Silverado 5.0L Brake Pedal VIN: 1GCEK19H2S
Hello IATN members. I do not feel conformable enough to call this one fixed but the customer has came and picked up his vehicle. I told the customer all the information I had got from all you that replied and told him a lot of you said the brakes just wouldn't...
1997 Chevrolet C-Series Kodiak C6H042 7.0L Hesitation VIN: 1GBJ7H1MXV
Thanks for the specifications. 26-32 psi is the proper pressure. thanks again. Truck will idle but wont accelerate, I have 35 psi pressure, just couldnt find any specs on what is should be.
1998 Chevrolet K1500 Suburban 5.7L No Start VIN: 1GKFK16R7W
I have Taken Suburban to the dealer 2 weeks ago. As of now they have not figured it out either. Makes me feel a little better. Thanks to all that helped.
1999 Chevrolet Tahoe LT 5.7L dome lamp VIN: 1GNEK13R7X
Thanks to ALL that helped!!! There were some very good tips and info that I used to determine the fault. Unplugged RKE and checked both dome lamp input and output of module and found circuit good with no short to ground until door switch was opened. Internal s...
2000 Chevrolet Silverado 1500 LS 5.3L Hdy. system VIN: 1GCEK14T1X
Well, calling this one fixed and out the door. Got a lot of great responses covering both the tried and true methods as well as some unique ideas. I had never heard of the quick test for the ABS motor and will file that away for a later day. Most responses ech...
1993 GMC G3500 Rally STX 7.4L Poor Idle Quality VIN: 2GJGG39N4P
2002 Oldsmobile Alero GL 3.4L No Start VIN: 1G3NL52E4C
Well, she is fixed. I was starting to get worried because the first half of the replies seemed to disregard the abnormal maf and gear position on the scantool and go straight for the passlock. My last four replies pointed me in the right direction. It was a pc...
2003 Pontiac Montana 3.4L transmission VIN: 1GMDX03E13
thanks for the advise guys i replaced the trans and it took care of the problem the warranty company did not want to pay for any rebuild they just wanted to replace it . thanks again for the help
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