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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for November 9, 2009
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Open Help Requests for GM
Help Request Answers
2003 Cadillac CTS 3.2L oil cooler VIN: 1G6DM57N33
car was towed in with for a oil leak problem, come to find out the oil is pooring out of the coolent system. we see that there is a cooler in the middle of the engine, but none of us have ever done one, we were just looking for some insite from someone that ha...
1997 Chevrolet Express 3500 5.7L 1-2 shift VIN: 1GCHG39RXV
Just to clarify, I do not claim to be a "trans guy". I have rebuilt several 350 and 400 THM's back in the day, so I have some idea what is going on in a trans, but I don't claim to be an expert, and usually install a reman, or send them to a trans shop. I was ...
2000 Chevrolet Silverado 1500 4.3L Shift indicator VIN: 1GCEK14W2Y
This pick-up has an issue of shift indicator's inoperation; a block around PRNDL does not lit up. I have replaced used transmission and Found shift indicator's not working. Replacing neutral safety switch (shift sensor?)did not solve the problem. Replaced clus...
2001 Chevrolet Tahoe 5.3L Collision Repair VIN: 4687980989
Antenna replacement, has anybody out there done one?? I have the coax pulled through the passenger side fender well, we cant get it back in, and shining light cant be seen, seems to dis-appear in the dash somewhere. Pulling hair, please help???
2003 Chevrolet Impala 3.8L Starting VIN: 2G1WH52K63
Good day people. I have this 03 Chev Impala that would intermittently do a no crank with VTD ( vehicle theft deterent) light flashing. Try to check for codes or data in BCM. No communication with BCM and interior and exterior lights would flash when I attempte...
2006 Chevrolet Tahoe 5.3L No Start, Poor Idle Quality, Hesitation, Stall, Misfire, MIL Lamp on VIN: 5450673541
this goes out to fleet techs. We've been getting hard start with only E85 fuel vehicles only. Short term fuel at 3% long term is at 25%. Hard starting is cold only at below 40F fuel preasure is at 62psi at key on first cycle injector flow is even across the bo... Trouble codes: P0171, P0174
2006 Chevrolet Silverado 1500 LT 5.3L Poor Idle Quality, Misfire VIN: 2GCEK13T76
This truck came in for a tune up and check engine light. P0300. Tuned up the truck and ran much better. New A/C Delco plugs, wires, fuel filter, and air filter was nearly new. Came back with a P0300 code again. With scanner hooked up, we can watch #5 cylinder ... Trouble codes: P0300
2004 GMC Envoy SLE 4.2L engine VIN: 1GKDT13S54
any techs out there with input is greatly appericated. i've got a 2004 gmc envoy with an intermittent engine vibration ( not a missfire ), the engine shakes enough to be noticeable but not hard like a miss. customer hears a noise once in a while, none heard on...
1987 Oldsmobile 98 Regency Touring 3.8L Poor Idle Quality, Surge, Misfire VIN: 1G3CX5132H
This olds has what feels like an intermit. misfire at light loads 1500 to 2000 rpm mainly going up hills. VERY intermit. to the point I've only experienced the symtom 2 times in the past year. Had my vantage and scan tool recording while it acted up once with ...
1997 Pontiac Grand Prix GTP 3.8L Cuts out, Misfire, Poor Fuel Economy VIN: 1G2WP1213V
Customer purchased the car in 2003, and was garaged in 2006. The car sat garaged for 3 years before being put back on the road earlier this year. The problem that this car has is that when you step on the accelerator and the boost builds up, cylinders 1,3,5 mi... Trouble codes: P0301 (Cylinder 1 missfire), P0303 (Cylinder 3 missfire), P0305 (Cylinder 5 missfire)
1999 Pontiac Firebird Trans Am 5.7L Misfire, MIL Lamp on VIN: 2G2FV22G8X
car came to us friday with steady miss on # 6 cyl and heavy white smoke from tail pipes. Does not smell like coolant burning and radiator is full. Thought maybe diesel fuel but cust is sure thats not it as proble has been intermittant since august. Replace all... Trouble codes: P0200, P0300
2002 Saturn L300 3.0L No Start, Stall, MIL Lamp on VIN: 1G8JW54R22
Hi guys this is my aunts car so you know the importance of fixing it. What the car did was quit while driving down the road and someone stopped to help and she said he wiggled the gas cap and the car started(yeah right). After it started it ran rough and shift... Trouble codes: P0727 (Engine Speed Circuit No Signal), P1780 (MIL Request by TCM)

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick LeSabre Limited 3.8L No Start VIN: S6VH417081
thanks for the help checked power and grounds they are ok replaced the computer runs good now
1999 Buick Century Custom 3.1L No Start VIN: 2G4WS52M9X
Thanks for all the replies. I tried a used one and got serial data and access to the PCM data stream. The car , however would not start until I had the unit reprogrammed at the dealer to suit the Buick and its BCM. Until that point the two were not speaking ... Trouble codes: U1255.
1990 Chevrolet C1500 454 SS 7.4L Poor Idle Quality, Hesitation, Surge, Cuts out, Stall, Misfire VIN: 1GCDC14NXL
thanks to all who replied. i tried an ign. mod. and it was no help. tried the dist out of the shop truck and it fixed it. got a reman unit set it up and runs good. i still do not know why it made the batt volts pid go to 0. i guess it does not matter. thank...
2001 Chevrolet Impala 3.8L Starting VIN: 2G1WH55K01
Thanks everybody- we needed to enter the vin under set up new BCM on the tech two and do the theft re learn. Thats one positive on BMW's- once you do the coding and programming with the GT! or Autologic you park them and get paid!! No farting around with addit...
2002 Chevrolet Cavalier 2.2L No Start VIN: 1G1JF52462
Thanks everyone for your help,the orange wire from the underhood fusebox to the ecm was broken.Replaced it and fired her up! Thanks again. Trouble codes: U1000 (no communication).
2003 Chevrolet S10 ZR2 4.3L transfer case VIN: WBSBG9331W
Thanks to Charles from New York who hit it right on the head. It was the vacuum swith on top of transfer case. I replaced switch and no more problem. Also replaced front and rear diff. fluids. Thanks to all who helped.
2004 Chevrolet Silverado 2500 HD 6.0L No Start VIN: 1GCHC29U94
well this was a very wierd one.i started with checking the crank signal and there was no 12v to the sensor. i called the tech line and they helped me with the idea that the cam sensor is also oon this 12v line. unplugged the cam sensor and i had 12v now at the... Trouble codes: U1000.
1998 GMC Safari SL 4.3L MIL Lamp on VIN: 1GKDM19WXW
Bil From Kentucky! You got it! it was the map sensor, it was not reading correctly at certain times. Checking the datalist at idle it read fine, and WOT read good too. The code would return under medium acceleration. The MAP reading didn't jive with the TPS re... Trouble codes: P0121.
1996 Pontiac Sunfire SE 2.2L pcm VIN: 1G2JB5249T
2000 Pontiac Grand Prix GT 3.8L factory alarm VIN: 1G2WP52K9Y
This car is fixed, but it had to go to the dealer. My Solus is up to date but it doesn't support the vehicle theft system on this car at the present time. I called Snap-On to make sure. Dealer replaced the theft module according to a conversation with the cus...
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