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Prev Professional Automotive Repair Technical Discussions for May 12, 2009
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Open Help Requests for GM
Help Request Answers
2002 Buick Century Limited 3.1L engine VIN: 2G4WY55J82
customer brought this car in complaining that the car would run hot, and had poor heat. tested the cooling system, held 15 psi for over 10 min, no leaks found or seen. coolant was very dirty and not at a safe level, advised customer to replace thermostat and f...
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1989 Cadillac Brougham 5.0L Charging VIN: 1G60W51Y5K
This one has got me questioning my abilities as a mechanic. Vehicle came in with complaint of the battery dying. I did a battery test, came up dead and wouldn't hold a charge. Jumped off and tested alternator. Found alternator not charging. Naturally, Replaced...
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1994 Cadillac Eldorado Touring 4.6L keyfob VIN: 1G6ET1297R
vehicle came in with non working A/C, plugged in Tech 2, cleared all codes in all systems, A/c is working fine now. The problem is I cannot get the keyfob reprogrammed I go through the procedure and the keyfob works but when I turn off the ignition system the ...
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2005 Cadillac CTS 3.6L Left Side Sec Timing Chain
Howdy there everyone. Wha tI have here is a very weird 2005 Cad CTS with the 3.6 engine. Came in to the shop with a severe misfire, spittin and sputtering, and hardly any power. Hooked up trusty ol' scanner and found cam sensor codes for the left bank of cylin...
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1966 Chevrolet chevy 11 383CID paint VIN: 115376N130
I hope someone can help me, I'm doing a color change on the interior of my car and I need the paint code [factory] for a chevy red. I think it's the same code 66 through 70 or 71. any help would be greatly appreciated. Alek
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1988 Chevrolet Corvette 35th Anniversary Edition 5.7L Alarm VATS VIN: 1G1YY2181J
Hey GM guys, I'm working on an old 88 corvette, with VATS system this car won't start sometimes, I have check and verified that key pellet wiring and everything else is working fine and needs a new module, call dealership and is discountinued, so I can't get a...
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1998 Chevrolet C1500 Cheyenne 5.7L MIL Lamp on VIN: 2GCEC19R3W
This truck sets both lean codes fairly rapidly after clearing. Problem started a few months ago but customer wouldn't leave truck for repairs so I tried some swaptronics with the MAF sensor from my truck. He still had a problem and I did not, so we decided to ... Trouble codes: P0171 (Lean bank 1), P0174 (Lean bank 2)
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2000 Chevrolet Metro LSi 1.3L ac system VIN: 2C1MR5229Y
This car loses it's freon charge after one day. I've tried adding dye and using and an electronic leak detector and cannot find a leak. I've even pulled the evap box out and the evap has no signs of dye. Thanks for any help. Steve
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2000 Chevrolet Cavalier LS 2.2L A/C compressor VIN: 1G1JF5249Y
I need the help of some of the A/C techs out there. Returned recently with no cold A/C. Compressor would cycle on and off. Replaced the compressor and new orifice tube with an OE comp under warranty. Compressor still cycles. Will cool to approximately 55 degre...
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2002 Chevrolet Monte Carlo SS 3.8L Alarm/Keyless entry VIN: 2G1WX15K42
While driving vehicle the alarm will begin to go off. The customer has diconected the horn to avoid the embarrasing honks so I have not verified it going off. The lights start to flash randomly (headlamps & reverse lamps). Those are the ones that turn on when ...
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2007 Chevrolet Malibu LT 2.2L Exhaust leak VIN: 1G1ZT58F07
This Chevy was being driven by my Grandaughter when she passed out and crashed. EMT said her responses indicated possible CO2 poisoning and hospital test indicated extremely low O2 blood levels. My son (also an auto tech) had changed oil last week and did a co...
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2002 GMC Savana 1500 5.7L Mechanical VIN: 1GDHG31R42
1.Cam Retard is jumping to 28 degrees @ 1100 RPM. 2.Set Cam Retard @ 0 at idle by scanner 3.Code in computer is "cam sensor" 4.Replaced cam sensor , still gets same code, and same readings 5.Check end play in crank - OK 6.Check Distributor Gear - OK 7.Check Cr...
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2003 GMC Sierra 1500 SLE 4.8L Poor Idle Quality, Surge, Cuts out, Stall, MIL Lamp on VIN: 1GTGC13U73
Customer complains of int. reduced engine power and mil on. Check for history and found 3 codes. Tried to verify the problem was unable to duplicate problem at this time. Seen tsb for loose ground. I checked the ground 103 and 104 it was at german specs good... Trouble codes: P0220, P1518, P2135
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2002 Saturn SL1 1.9L Poor Idle Quality, Hesitation, Surge, MIL Lamp on VIN: 1G8ZH52832
Installed new pump due to erratic operation Loss of fuel pressure with exceesive pump noise during pressure loss, and poor electrical pattern. Replaced fuel filter at same time. Both Carquest parts. (CQ/WIX filter & CQ/AIRTEX pump. Don't ususally use CQ pumps ... Trouble codes: P0171 (Lean exhaust Bank one)
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Fixes & Summaries for GM
Fix/Summary Answers
2003 Cadillac CTS 3.2L stability control VIN: 1G6DM57N33
I installed a new steering wheel postion sensor and the code has not returned. thanks for the help
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1993 Chevrolet K1500 Cheyenne 5.7L Cuts out VIN: 2GCEK19KOP
It appears that the fix was the distibutor. We switched it out May 8th and have not heard back from the owner. So far, so good. Thanks to all who replied and we will take to heart the advice to use OEM whenever possible. This experience made us change the way ...
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1997 Chevrolet Express 2500 LS 5.7L tcc & 3-2 shift solenoid VIN: 1GNGG25R8V
This one is fixed. Thanks everyone . It was the ECM. It was a good ECM just needed to be reprogramed. We do not have a tech2 yet so went to a friends shop that has one and he reprogramed it. The ECM we got from Carquest was flashed but it was flashed for a tru...
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2000 Chevrolet Camaro Z28 SS 5.7L Intermediate shaft VIN: 2G1FP22G8Y
I used Dorman part # 425-153 from Car Quest Auto Supply they had two of them in there warehouse. The only discrepancy was I had to cut a small channel in the steering column shaft for the coupler pinch bolt to work. Thanks, Again to everyone Ken [...] ...
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2002 Chevrolet Impala 3.8L starting, bcm/pcm comm VIN: 2G1WF52E92
well most of u said a bad bcm, and u were right, but it also had burned out the bus line in the pcm. replace both reprogram and all is good.
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2002 Chevrolet Express 2500 5.0L Starting VIN: 1GCFG25M92
Want to thanks everyone who replied, I didn't replace the fuel pump, the customer is going to do it himself. Again thanks Roy
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2003 Chevrolet Trailblazer LS 4.2L Brake System Entirely VIN: 1GNET16S50
Vehicle is Repaired; I want to thank all that responded,The Information was quite useful. I wasn't thinking in the terms alot of you were,as far as the Contamination aspect,Forgot to realize exactly what the Situation was,But alot of you set me straight,and it...
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2005 Chevrolet Silverado 2500 HD 6.6L No Start VIN: 1GCHC23275
I did not have any way to check fuel pressure (Too high pressure), replaced fuel filter, no change, check truck did have the latest update software. I told the customer bring it to Dealership. Thanks everyone.
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1994 GMC G3500 Vandura 6.5L no shift VIN: 1GDHG31Y8S
Ok, you guys are great. I put a new tech on these vans last night. He started with a fresh set of ideas. He found no power problems either, but he did find some ground problems that I missed. So we cleaned and tighten the grounds on the engine and the back of ...
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2004 GMC Yukon SLE 5.3L Seat Heater VIN: 1GEK13284R
Sorry to close this one so late w/o a fix. Since this is a used car dealer vehicle they said not to bother with it since the summer was coming up. Hopefully in a couple of months I will be able to buy a tech 2. Thanks everyone for the help.
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1998 Oldsmobile Aurora 4.0L engine VIN: 1G3GR62C3W
cooling fans were not coming on until tem,p reached 250 degrees reflash computer problem solved
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2006 Pontiac G6 2.4L poor performance VIN: 1G2ZF55B46
Thanks to everyone who replied. It turns out that it was a pluged catalytic converter. I check wiring and such and found no problems. The plugged cat was why it was not setting any code. and yes it did have to do two drive cycles to set any hard fault in th...
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