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Prev Professional Automotive Repair Technical Discussions for December 5, 2006
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Open Help Requests for GM
Help Request Answers
1995 Buick Riviera 3.8L No Start VIN: 1G4GD22K8S
This one has been quite troublesome for me so maybe you can offer some good advice on this one. I purchased the car with a no start problem. He said the car started to run rough and then just would not restart. When I purchased the vehicle I found what I thoug...
1991 Cadillac DeVille 4.9L Electronic VIN: 1G6CD53B8M
Blower motor was working intermittently. When I got it to act up, found no voltage at power module from bcm. Unplugged bcm to do some testing, now when I plug bcm back in, the ECC screen is locked up with a lower case "d" displayed. How do I unlock display? EC...
1998 Cadillac Catera 3.0L brake pull VIN: W06VR52ROW
hey cadillac gurus and all interested parties. Happy holidays by the way and thanks for being here. We have this cadillac catera that is freaky. When braking it pulls left or right. Which ever way it takes a notion too. We have changed the front brake hoses an...
2002 Cadillac Escalade 6.0L Poor Idle Quality, Stall VIN: 1GYEK63N42
Hello IATN,this vehicle has a rough idle and a little low about 550 rpm. There is a hissing sound coming from the intake manifold area which led me to believe there is a vacuum leak but i have search and search and can not find it on the other hand I did a vac...
2003 Cadillac CTS 3.2L oil in cooling system VIN: 1G6DM57N13
their is no water in the engine oil only oil in the coolant system.water and oil mix turned into a jelly like material[sluge].no previous history first time customer.
1991 Chevrolet S10 4.3L Excessive Emissions, Poor Idle Quality, Stall, Poor Fuel Economy
we are at a loss on this one, vehicle came in running poorly. and for once when we started to work on it it won't even start, long story short-we have injection pulse and spark. when you crank vehicle it dumps fuel in closed throttle position, when you open it...
1999 Chevrolet Venture 3.4L Hesitation, BUCKS HARD VIN: 1GNPX03E6X
this van bucks real hard & acts like if you shot the ignition key of for a second then turn it back on mostley when cold, there is no codes, if you run this van for 2 minutes to warm up the problem will go away until it cools dawn again. thanks for the help
1999 Chevrolet Blazer 4.3L intake gaskets VIN: W8X2207871
this is a question for those who have replaced intake gaskets on this 4.3l blazer,trucks. the last two that i have done, when i get them back together and flush the heater core, block, radiator the vehicle only has heat. it will not switch to cold in the vehic...
1999 Chevrolet Tahoe 5.7L Distributor timming VIN: 1GNEC13ROX
Vehicle came in with check engine light and transmission not shifting.Pulled codes, code PO141 (02 heater circut), PO161 (02 sensor bank 2 sensor 2), P0756 ( shorted solonid B performance or stuck off, PO751 ( shift solonid A perfomance or stuck off), P1111 ( ...
2002 Chevrolet Avalanche 1500 5.3L dead battery VIN: 3GNEK13T52
Good day people. I have this Avalanche with a parasitic draw on the system of approx. 300 mili amps. I let it time out for 20 minutes and the draw is still there. I have determine that the inadvert power relay control side is staying energized. This is control...
2002 Chevrolet Suburban 1500 LT 5.3L parking brake VIN: 1GNFK16Z42
Hello fellow techs - the parking brake pedal goes to floor and does not lock the wheels - removed rotors - shoes new and adjusters free - could the cables be streached or am I missing something - thanks
2003 Chevrolet Silverado 1500 4.8L door panel VIN: 1GCEKI9V13
Hello everyone hope your day is going great This is my personal truck.I just bought it recently.There is a noise in the speaker in the front door and Ive tried to get the door panel off to see what is wrong and Im afraid of breaking the door panel.It looks l...
2004 Chevrolet Silverado 2500 6.0L n VIN: 1GCHK29U74
This vehicle was brought over yesterday for a stalling problem. I have cleaned the throttle plates, I have run sea foam through the intake plantim and also put a can in the gas tank. There is NO service bulletin on this truck, sometime the truck starts fine, s...
2005 Chevrolet Impala LS 3.8L tire pressure monitor VIN: 2G1WH55K15
Tire pressure monitor trouble. This customer has had repeated settings of this code even though the tire pressures have been good. There are no ABS codes(this system uses the ABS sensors to determine a low tire). I could find no service bulletins that cover th...
2003 GMC Sierra 1500 SLE 5.3L Poor Idle Quality, Misfire, MIL Lamp on VIN: 2GTEK19T23
GM misfire diagnosis - easy right? This one has my tech stumped. The customer came in asking for a fuel pressure test as he thought he had a bad pump - he said that ever since he ran it out of gas the truck has run rough. Pressure was within spec & engine was ... Trouble codes: P0300 (Random/Multiple cylinder misfire)
2001 Oldsmobile Alero GL 2.4L No Start VIN: 1G3NL52TX1
Hello all fellow techs, I need help on a 2001 Oldsmobile Alero please. Vehicle came in as a crank/no start. Found that there is no injector pulse. The injectors are not getting B+. Can spray carb cleaner into throttle body and vehicle will start but runs rough...
2001 Oldsmobile Aurora 3.5L crank no start VIN: 1G3GR64H31
Car came in on hook, connect battery cable and car comes to life, with key in my hand. Try to start the car and it cranks but no start. Find the 8 computors alive in the key off possition. In the run possition, none alive. The other possitions have random on a...
1997 Pontiac Trans Sport 3.4L low air flow out vents VIN: 1GMDX03E2V
I remember something about a blend door problem but not exactly
1997 Saturn SC2 1.9L No Start VIN: 1G82H1278V
Hello techs, i have one thats normally a easy fix but this one has stumped me. i have a 97 saturn sc2,1.9 auto that came in as a no-start from another local shop. There no spark or injector pulse. With a modis i looked at the data and found the rpm fixed @ 61 ...
2000 Saturn LS2 3.0L Oil cooler VIN: 1G8JW52R8Y
I have a coolant leak from around the oil cooler cover plate. (The one under the intake and in between the cylinder heads.) Is there any way to get this out and reseal it without pulling the cylinder heads?

Fixes & Summaries for GM
Fix/Summary Answers
2000 Buick Regal LS 3.8L abs VIN: 2G4WB52K9Y
Replaced Ing. Switch Every thing is ok Thanks for all your help Jason
1992 Cadillac Fleetwood 60 Special 4.9L Misfire VIN: 1G6CG53B7N
Thanx all. Another bad PCM. Vicken and Leo put me on track.They suggested further injector testing. I was so hung up on the vacuum fluctuation that I never scoped the injectors with this PCM installed. The miss was consistent on #2 and Viola! The driver just w...
1996 Cadillac DeVille 4.6L No Start VIN: 1G6KD52Y3T
I sent this car on its way but am not convinced it is fixed.After countless hours and many sleepless nights I had to bail.The communication problem was intermittent and every time I went through the procedure of unplugging all modules and reconnecting one at a...
1988 Chevrolet C1500 Cheyenne 4.3L No Start VIN: 1GCDC14ZDJ
Well I have this one figured out. Although I don't have it running down the road yet, the repair is inevitable. A little more patience and organized diagnosis and I would have found the problem quicker and more professional-like. I had some great responses tha...
1996 Chevrolet K1500 Cheyenne 5.7L abs VIN: 2GCEK19R6T
Thanks to all who replied. The fix was a right front hub. What led me to this is when I finally had someone with me to watch my scantool, they noticed the RF was lagging behind till about 7-8 mph. Replaced hub which came with a new sensor and all is well. Th...
2006 Chevrolet Colorado LT 3.5L rear shoes VIN: 1GCDT13626
we ordered new brake shoes and installed. i double checked the auto tentioners and all components. the only problem i found was a lot of mud in drums. all seems well now.
2002 Oldsmobile Bravada 4.2L Control Arm Bushings VIN: 1GHDT13S42
Well I have to close this one as unfixed. I did get the vehicle in the shop again, but customer wasnt ready to dissassemble at this time. From the looks of it, the upper bushings are different from the 2001. The lowers are actually not part of the control arm,...
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