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Prev Professional Automotive Repair Technical Discussions for April 2, 2007
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Open Help Requests for GM
Help Request Answers
1992 Buick Regal Gran Sport 3.8L Cuts out, Stall VIN: 2G4WF14L6N
Motor dies when coming to a stop after highway speeds or if left Idling for over 10 min. Replaced Cam sensor and Ignition Module but no change. Always starts back up imediatly and runs for another 10 min before stalling again. Even when stalled it loses no fue... Trouble codes: 12 (Unknown), 41 (Camsensor), 69 (Unknown)
2000 Buick Century Custom 3.1L Battery VIN: 2G4WS52J9Y
Morning guys! Have here a Buick Century .100ma draw started pulling fuses, got to BCM PWR fuse, 10amp fuse in instrument panel fuse block! After pulling that fuse draw droped to about .8ma draw! No lights are on! Glove compartment light not on either! Plugged ...
2000 Buick Century Custom 3.1L wipers VIN: 2G4WS52J6Y
The wipers on this Buick park at the top of the windshield.All other functions are O.k.I found a bulletin for a 98 to replace the crank arm assembly and I know I've replaced those on Ford products for this problem.The bulletin does not apply to 2000 model and ...
1997 Cadillac DeVille 4.6L door locks,fuel door,trunk release VIN: 1G6KD52Y3V
Hope some GM techs can help. This caddies remote will not work-lock or unlock for doors, or open fuel door or open rear trunk lid. Customer tried new batteries in both remotes still doesnt work. I tried to put both remotes into sink by pressing lock and unlo...
1992 Chevrolet K2500 Cheyenne 5.7L Stall VIN: 2GCGC29KON
This truck has a slight miss but with all the miles I think it's acceptable. When the engine is warm and sometimes when it's cold it will die when comming to a stop. It always runs a little rough when comming to a stop like it's searching for an idle speed. Af...
2000 Chevrolet Blazer LS 4.3L fuel gauge VIN: 1GNDT13WX1
hope someone has seen this its driving me crazy. customer say gauge always worked and one day stuck at empty. checked harness at tank all looks good with harness unplugged gauge never moves i thought id see it move. lowered car got in and gauge started reading...
2004 Chevrolet Venture Plus 3.4L MIL Lamp on VIN: 1GBDX23E94
I have this van in for P0455. Did an evap smoke test no leaks found. Tried to run evap service bay test but it timed out. The fuel tank pressure sensor reads -3.5 to -4.1 inhg even when running test. I am leaning towards the fuel tank pressure sensor but am un... Trouble codes: P0455 (Evap large leak detected)
2003 GMC Top Kick 7.2L ABS Light
Hello and thank you in advance for the help/advice. The patient today is an 03 GMC TopKick configured as a DOT road crew safety crash cushion. The operator reports that he had a simultaneous failure of: oil pressure, temp, voltage, and fuel guages, as well as ...
2000 Oldsmobile Alero GL 3.4L no start VIN: 1G3NF12E51
My customer has this 2000 Alero that frequently cranks but will not start: sets off the security system and has to be resequenced (cycle key switch, let it set until security light stops flashing, recycle, then restart) about twice a week. I had taught him ove...
1978 Pontiac Firebird 5.7L engine VIN: 1G2FW218XH
Good evening fellow techs, I have a problem here with my wife's TA, We replaced the engine about 2500 miles ago, 1500 miles later the thrust bearing had failed. The reman folks said bad torque converter not their problem, Got reman crack from local vendor and ...
1991 Pontiac Sunbird LE 2.0L Cooling system VIN: 1G2JB34K4M
I've had this vehicle the past 90,000 miles. It has never been hot since I bought it. A couple of months ago, it began to steam out the exhaust on start up after sitting a while, but only every once in a while. I first tried GM seal tabs. Then I tried Liquid g...
1999 Pontiac Grand Am SE 2.4L Hesitation, Cuts out, Misfire, MIL Lamp on VIN: 1G2NE52T2X
this car has a stumble and misfire on #1 under heavy accel. we have scoped all the injectors they all look good, moved #1 and #4 and our misfire stays on #1 it seems like an ignition misfire. could a bad injector driver cause this bad of a miss? voltage drop b... Trouble codes: P1171
2001 Pontiac Grand Am GT 3.4L Ignition VIN: 1G2NW52E01
Hello, the customer complaint is getting the car to start on mornings after a rainy, damp night, etc. When the problem first started, usually providing a little pedal during ignition would fix this but lately this was having no effect. I have had the car for a...
2001 Pontiac Grand Prix GTP 3.8L c/v joint? VIN: 1G2WR521X1
on this grand prix if you make a right turn and accelerate somewhat had you get a shudder in car and can feel it in wheel a little.even after you straighten out in lane stays till you back out of throttle.acts like a c/v joint but we have no noise on hoist run...
1992 Saturn SL1 1.9L No Start, Cuts out, Stall, MIL Lamp on VIN: 1G8ZG549XN
Thank you in advance for your assistance. This saturn will lose injector pulse and spark. It starts and runs great but will just quit running. I don't know if my reasoning is correct on this, so here is what I'm thinking-- since the DIS module controls the coi... Trouble codes: 19 (ckpecm), 23 (iat), 48 (icmecm)
2001 Saturn LW300 3.0L No Start VIN: 1G8JW82R01
Hello Saturn experts, I've got a problem with this LW300. Customer told me the vehicle started sputtering while he was on the highway, so he pulled over to check it and it died and would not restart. After it cooled off it restarted and has ran fine ever since... Trouble codes: P0136 (O2 Sensor Heater Bank 1 Sensor 2), P0156 (O2 Sensor Heater Bank 2 Sensor 2)

Fixes & Summaries for GM
Fix/Summary Answers
1995 Buick LeSabre Custom 3.8L heater core VIN: 1G4HP52L6S
Hello fellow techies, and sorry for the long delay in closing this, but I wanted to make sure it was fixed. I received 56 replies on my post, which was really great, and I want to thank all of you for your time. The overwhelming majority of you thought electro...
1996 Buick LeSabre Custom 3.8L Hesitation VIN: 1G4NC64MAT
Thanks to everyone for replying. Problem ended up being the incorrect intake manifold gaskets.I took the valve cover off the front bank and found that no oil was getting to intake valves. Had read in iatn techmail about incorrect intake gasket causing this iss...
1998 Chevrolet Cavalier LS 2.4L pedel VIN: 1G1JF52T1W
Thanks for all the replies and sugestions.I stayed saturday and started from scratch.While under the dash checking the brake pedel for binding (disconected from booster),I noted a SLIGHT hissing sound from the air filter side of booster.I used a pick to move t...
1998 Chevrolet K1500 Cheyenne 5.7L brakes in general VIN: 2GCEK19R7W
First of all I would like to thank all that repied for there help. 75% of the replies all suggested Brake flush due to possible contamination that may have led to clogging internal of ABS assembly. That was the fix!!! First I flushed the Brake System using our...
1999 Chevrolet Tracker 2.0L Radiator VIN: 2CNBJ13C9X
Thank you all for the advice. We finally pulled the head on this vehicle and found a hand size glob of RTV silicone directly around the #1 cylinder water jacket and more in the small water nipple going to the head. The water pump was the source of the RTV. Wha...
2004 Chevrolet Trailblazer LS 4.2L Poor Idle Quality, Stall VIN: 1GNDT13S64
kept vehicle five days and could not get vehical to duplicate problem. All sensors pertaining to code was within specs. Thank you for advice. Owner picked vehicle up Saterday Trouble codes: P171.
1989 Geo Spectrum 1.5L Cuts out VIN: J81RF217XK
Sorry to sabut we are unable to check this any farther the customer has gotten rid of the vehicle. I do think though that the problem was somewhere in the ignition system. Bill had mentioned a solinoid in the carb. I did not know about the solenoid but did hea...
1993 GMC K1500 Sierra 5.7L Hesitation, Surge, Stall VIN: 1GTEK14K1P
This truck is not fixed, though, not for lack of trying. I received some great suggestions and I appreciate each and every one of them. Dan suggested that there are problems with certain brands of spark plugs. This truck had autolite 25's. I've never had p...
2002 GMC Sierra 2500 6.0L Electronic VIN: 1GK46L7D8C
Dealer assures me that a reflash will correct the problem because the replacement switch is an update. Thanks to all that assisted.
2003 GMC Sierra Denali 6.0L hydrualic VIN: 2GTFK69U13
thanks to everyone who took the time to write back to me,it does appear ted put me on the right track. after performing multiple brake flushes after beating up on the brake system the problem appears to be gone 3 weeks now and no incidents some i am gonna say ...
1994 Pontiac Firebird Formula 5.7L No Start, Cuts out VIN: 2G2FV22POR
Thanks to all who helped. The websites on how the Opti Spark works were very helpful. A new AC delco distributor assembly fixed the vehicle. I'm still confused why I didn't get a Lo resolution or Hi resolution fault in the PCM. Thanks again.
1997 Pontiac Grand Prix GT 3.8L Alternator VIN: 1G2WP52K2V
Thanks to everyone for the input. Many things I had already tried/checked yet a few had escaped me .. the post in the fuse panel for example. All told no one actually hit it but lead me in the right direction. I found that the second wire coming from the alt p...
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