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Prev Professional Automotive Repair Technical Discussions for August 17, 2009
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Open Help Requests for GM
Help Request Answers
1977 Chevrolet C20 Silverado 7.4L Unknown VIN: GM12387GOO
WE HAVE A JET BOAT WITH A SAY 1977 454 TOOK IT OUT YESTERDAY RAN GREAT 40 lbs OIL PRES BUT HAD A SLIGHT ENGIN KNOCK DOESENT SOUND LIKE A SPUN BEARING ALMOST SOUNDS LIKE A LIFTER PULLED VALE COVERS OFF TO FIND ROLLER ROCKERS WHITH ALOT OF WATER IN TOPEND CHEKED...
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1992 Chevrolet K1500 WT 4.3L valve train VIN: 1GCEK1427M
vehicle showed up in my driveway sunday (oh boy) its a friends sons truck, had a definate mis-fire, isilated to #6 cylinder, further diagnosis led me to remove valve cover and discovered #6 intake rocker stud had pulled out of head (press in style) anyone know...
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1998 Chevrolet Cavalier Z24 2.4L No Start, Stall VIN: 4G1JF32T8W
owner says will stall when driving but will start after waiting awhile.sounds like ign. mod. I had this car for 2 weeks a month ago and never witnessed a stall. Owners said she's not driving it until the stalling is fixed.Well needless to say I've had it for a... Trouble codes: P034, P033, P050
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2002 Chevrolet Monte Carlo LS 3.4L Torque converter clutch VIN: 2G1WW12E42
I have this Monte Carlo that has the Tcc slipping at cruise speed.(200 rpm) The problem is evident by watching the tach fluctuate. I have reflashed the PCM to the latest calibration but this did not cure the problem. I can lock down the converter at 100 percen...
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2002 Chevrolet Cavalier 2.2L drivetrain VIN: 1G1JC12492
my problem car runs great trans shifts great, take your hand of the wheel at speed drives straight all that is good but when you apply the brks car pulsates forward and back not side to side not in the brake pedal and not in the steering wheel, pulsation get s...
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2003 Chevrolet Silverado 1500 5.3L Air Bag VIN: 2GCEK19T33
Greetings fellow techs, Got one here that has us scratching our noggins. 2003 Chevrolet K1500 truck came in this morning with a Service Air Bag light on in the dash. Pulled the codes and found the following B0100, B0103 and B0092. After clearing the codes the ...
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2004 Chevrolet Silverado 2500 HD 6.0L MIL Lamp on VIN: 1GCHC29U84
The customer's complaint is that after driving the truck for a while, the "Reduced Engine Power" and "Check Engine" lights come on, and that the vehicle won't accelerate and has no power. Previously when this problem occured, the APP was replaced and that took... Trouble codes: P1125 (Accelerator Pedal Position System), P2120 (Accelerator Pedal Position System Sensor 1 Circuit)
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2005 Chevrolet Tahoe LT 5.3L Battery Light VIN: 1GNEK13T65
I found a TSB for programing the PCM and resetting the IPC,I do not think that applies here.If anyone has any ideas,I am not sure where to go on this one.
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2006 Chevrolet Trailblazer LT 4.2L Poor Idle Quality, MIL Lamp on VIN: 1GNET16S36
this vehicle has come in twice now for this code...as usual it is running fine. this seems to be a very intermittent issue. i was just curious if anyone else has run int this before. the only thing i can see is on the freeze frame data the snapshot read 550 rp... Trouble codes: P0506 (rpms too low)
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1996 GMC K2500 Suburban 5.7L Suspension VIN: 1GKGK26R7T
while driving on highway and reaching 60 mph and over it gets very hard to maintain vehicle in lane/have to keep pulling steering in both directions to keep straight and keep from wandering/also vehicle steering wheel not returning after making left or right t...
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2002 GMC Savana 3500 5.7L No Start VIN: 2G1WL52M8V
Van came in as no start. We diagnosed it first as a shorted fuel pump. Repalaced fuel pump still no start. Tried to communicate with PCM and could not. Opened up PCM and found circuit board burned up. Replaced PCM with new one that we had flashed at local part...
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2003 GMC Envoy SLE 4.2L Hesitation, Cuts out, Misfire, will not rev up VIN: 1GKDT13S33
I think I may have two problems. One problem at idle and one at cruise. Vehicle will not rev over 2,500 rpm setting still in neutral. I know it's not right because I can't do a CKP Variation relearn. Vehicle will throttle up to 6,000 rpm while driving. Also wh...
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2001 Pontiac Grand Am SE 2.4L MIL Lamp on VIN: 1G2NF52T51
Hey guys, Heres my latest dilema... I have the 2001 Grand Am with a 2.4 Quad Four engine. It keeps popping a p0442 code. We originally looked at it(smoke tested), and replaced the filler neck and gas cap with new GM parts. It came back a few days later with P0... Trouble codes: P0442
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Fixes & Summaries for GM
Fix/Summary Answers
1999 Cadillac Escalade 5.7L Door Locks VIN: 1GYEK13R4X
Hello Gentleman I decided to e-mailed Alldata and requested the proper wiring and location. You have to roll the dash and the module is taped to the harness, there is no other way to get to it. Thank you to the guys who responded.
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1988 Chevrolet C1500 Cheyenne 5.7L front brakes VIN: 1GDC14K7JZ
thanks! i replaced caliper,rotor and brake hose driver side everything is good now thanks a lot have a nice day!
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1995 Chevrolet K2500 6.5L MIL Lamp on VIN: 1GCFK24SXS
Thanks for all of the replies! A fresh perspective is priceless. The problem turned out to be the PDM. It had been replaced less than 2 yrs ago. We replaced it using the relocation kit and it runs great. So, we turned out to have several issues. Replacing... Trouble codes: 56 (injector pump calibration).
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2003 Chevrolet Suburban 1500 LT 5.3L Tachometer VIN: 1GNEC16T23
All - thank you for the responses. Fault met Bulletin criteria and dealer covered repair as described.
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2004 Chevrolet Malibu 3.5L front undercarriage
First I'd like to thank everyone for their time to look at my problem and offer help. After taking a break from this car and going back with a fresh head, i rechecked everything i previously looked at and found on this second inspection that the rear lower con...
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2000 GMC Sonoma SL 4.3L No Start VIN: 1GTCS19WXY
thanks to all that replied. we removed a set of bosh plugs from this vehicle and installed delco plugs. vehicle has been returned to the customer and he says it is fine. Trouble codes: P300.
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2002 Oldsmobile Bravada 4.2L a/c system VIN: 1GHDT13S52
This vehicle is back on the road blowing cool once again. It appears the ambient temp sensor located on the top of the core support, was bad, but only occasionally. We ran the OHMs test Friday and got zero several times. On Monday morning the reading was good ...
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1997 Pontiac Sunfire SE 2.4L Poor Idle Quality, Cuts out, Misfire VIN: 1G2JB52T2V
Hi everyone, Sorry about the late posting. This help request was posted by another tech in the shop here. I was going to get some more information, but he had fixed the problem before I got around to this request. Everything he was describing to me was a secon...
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2000 Pontiac Montana 3.4L Cuts out VIN: 1GMDX03EXY
proble with vehicle turned out to be a bad map sensor thank you to all that replied Trouble codes: 131 (171 -), 171 (testing and results).
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2001 Pontiac Bonneville SE 3.8L Stall VIN: 1G2H54K014
thanks for all the replies john hit it right it was the fuel pressure regulator was bad. even thought we check it a couple of time. changed it out and customer is very happy.
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2005 Saturn Relay-2 3.5L Tach VIN: 5GZDV23L35
Thanks for your replies. The customer decided she did not need the tach repaired even though she has a extended warranty that would help pay for the cluster. She can't be with out her vehicle long enough for us to get the cluster replaced.
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