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Prev Professional Automotive Repair Technical Discussions for October 30, 2008
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Open Help Requests for GM
Help Request Answers
1992 Buick Park Avenue 3.8L crank pully VIN: 1G4CW53L0N
cannot get crank pully off to do visual inspection of crank sensor. pully appears soft and prone to bend if not pulled correctly. i have pulled these off in the past and dont remember having any trouble getting them off. usually slide right off. any ideas?
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1992 Cadillac DeVille 4.9L oil light, draw on system VIN: 1G6CD53B3N
Hello, This car was towed to me after sitting all summer. I charged battery and started car. thought all was well until engine was shut off, i noticed the oil light stays on with the key off. when unplugging the oil sending unit the light goes out. we replace...
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1992 Chevrolet S10 Blazer Sport 4.3L Cuts out VIN: 1GNDT13W2N
owner replaced fuel pump w/ correct one,ign module,& dist,egr cleaned, broke exhaust loose not stopped up,ive checked for codes none found had modis on injector trigger acts like cutting off 1 bank of injectors & almost like exhaust stopped up ive had it loose...
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1994 Chevrolet Astro CL 4.3L blower motor VIN: 1GNDM19Z1R
Help! The vehicle keeps blowing out the 2 low speeds on the blower resistor. It does not do it right away. The customer drives the vehicle for a week, then the two low speeds on the resistor blow out. We have replaced the blower motor twice, the resistor thre...
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1999 Chevrolet Cavalier LS 2.2L high beam indicator and drl light VIN: 1G1JF5247X
car has a high beam indicator that was burnt out so the bulb was changed and the light is on all the time.(pre excisting condition told after).and the drl does not work.replaced cluster and multi function switch.no change.the headlights work low and high beam
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2000 Chevrolet Astro 4.3L like timing out/ VIN: 1GNDM19WYB
i check everithing,compression good/fuel pressure good likei said its not fuel problem.no corrolation problem., if someone ever see a timing chain jump on a 4.3 and how can i check the timing chain? mass air flow is good. the advance spark is going up 20 degre...
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2002 Chevrolet Silverado 1500 HD LS 6.0L 4wheel drive VIN: 1GCGK13U92
4wd not working,press any button on the switch and get nothing.tried a switch (because i had one) no different.hooked up the scanner and counld not communicate with the transfer module,but can communicate with all other modules.the last time this happened in a...
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2002 Chevrolet Impala 3.8L Poor Idle Quality, Cuts out, MIL Lamp on
Customer came in for yearly state inspection, which in Upstate New York you have to pass both a safety and a low enhanced emissions test. Check engine light was on so we scanned car and found po420 catalyst eff. limit. Car has a new convertor on it. And new o2... Trouble codes: P0420
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2004 Chevrolet Silverado 1500 4.8L MIL Lamp on VIN: 2GCEC19V24
thanks in advace for your time we have this trk that purchased w/this trouble the trk came to us from a customer who purchased the trk form a used dealer here the code u0107a will triger and the trk would have low power/limp mode long story sh0rt the tca had b... Trouble codes: U107
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1993 GMC Yukon 5.7L po68,tcc slippage VIN: 1GKE18K82R
my problem is that it sets a code 68 which the troubel tree says is excessive tcc slippage. the transmission was replaced with a 4l80e and prom and wiring was changed accordingly. it shifts all the gears fine including lock-up but occasionally will set the cod...
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2002 Oldsmobile Bravada 4.2L rear or front diff VIN: 1GHDT13522
vehicle is binding up or it feels tight when you back up or go forward while turning sharply
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1998 Pontiac Sunfire SE 2.2L MIL Lamp on, Eneven cranking VIN: 1G2JB1241W
This vehicle came in after being "repaired" at another shop. The P0335 and P0342 codes still set after another shop replaced the CKP, CMP and ICM. Trouble trees for the codes lead nowhere. Grounds and connectors were checked. CKP and CMP sensors are counting.... Trouble codes: P0335 (CKP sensor circuit), P0342 (CMP sensor signal circuit signal low)
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Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Century Limited 3.1L drivers electric window VIN: 2G4WY52M1W
we checked the door wiring harness, and all cnnections, replaced the window switch assy. it has not acted up since... we hope it is fixed!
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2000 Buick LeSabre Limited 3.8L Misfire VIN: 1G4HR54K9Y
Yep, I'm an idiot it turned out to be the crank sensor. It was an intermittent miss that showed up the most on the middle coil (?). Thank you for the help!
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2003 Buick Rendezvous CX 3.4L Cuts out VIN: 3G5DB03E63
This vehicle is fixed. Thanks to all who replied. Many said to check or replace coil(s) with known good. However, Chris from Ontario hit the nail on the head. He said to check the wiring harness from the crank sensor to the module back where it snakes around t...
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1990 Chevrolet Corvette 5.7L pcm VIN: 1G1YY2383L
Ok after checking this car about five more times I found that if you push in and wiggle the PROM the computor works fine! I found that the computor has a small crack in the board! Ordered another computor and it was fixed!!! Thanks to everyone took the time to...
9
1992 Chevrolet S10 2.8L guages and diplay VIN: 1GCC1519RX
Hi and thanks for al the help. We have sent the cluster out to be repaired. And are just waiting for it's return. Sure it will work because we already check the input plug spec's Thanks again
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1999 Chevrolet Malibu 2.4L Hesitation, Misfire VIN: 1G1ND52T9X
thank you to all for all the responses, i unplugged upstream o2 and problem still presisted, i tried unplugging the maf and driving that way problem was still there a special thanks to Alex from Georgia who suggested the ignition boots. like you said i used o...
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2002 Chevrolet Trailblazer LS 4.2L radio VIN: 1GNDT13S22
WENT BACK TO SALVAGE YARD GOT A RADIO FOR THE CORRECT YEAR PROGRAMMED IT AND IT WORKED THANKS FOR ALL YOUR HELP.
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2004 Chevrolet Impala LS 3.8L No Start VIN: 2G1WH52K94
It appears fixed at this time. For one responder, I suggest reading the post better before replying as everything mentioned in the reply was answered in the initial post. Most replies pointed to theft deterrent and the ignition switch and I would have offered ...
14
2005 Chevrolet Malibu Maxx LS 3.5L Brake Lights VIN: 1G1ZT62875
Thanks for leading me in the right direction! The BCM was the culprit. After letting the car sit for almost the entire day with everything hooked up to it. We finally saw the brake lights come on for no apparent reason. There was no signal coming out of the br...
5
1999 Pontiac Grand Am SE 3.4L cooling system VIN: 1G2NG12E7Y
THANKS TO ALL THAT RESPONDED. DID COMBUSTION TEST HOT AND COLD NO LEAKS WERE DETECTED. FOUND THREADS AT RESEVOIR CAP WERE MESSED UP. GOT NEW RESEVOIR AND CAP AND RETEST DROVE VEHICLE FOR 20 MILES AND PROBLEMS SEEMS TO BE FIXED. AGAIN THANKS TO ALL THAT REPLIED...
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2001 Saturn SL1 1.9L Poor Idle Quality VIN: 1G8ZG52871
We found a bad TPS on this car. Just as suggested by many people when we wiggled the body of the TPS the idle would go up and the TPS reading would also go up. Test drove with no problems after repair. Cust has been several days with no problems. Thanks for th...
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2001 Saturn SC1 1.9L won't run monitors VIN: 1G8ZN12811
Thanks for all the help. I replaced the coolant temp sensor and drove the car and it ran enough monitors to pass state inspection. Thanks again, Christopher
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