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Professional Automotive Repair Technical Discussions for August 31, 2006 International Automotive Technicians' Network (iATN) - Members Only |
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Open Help Requests for GM
| Help Request | Answers | |
| 1993 Buick Park Avenue Ultra 3.8L MIL Lamp on VIN: 1G4CU5315P We have cycled the egr solenoid #3 and have seen the engine rpms drop greatly. Removed egr to inspect passages- (very open) Found the o2 sensor very sluggish so we replaced that and saw an improvement with the intergrator & block learn however the MIL light st... Trouble codes: 55 (egr solenoid 3 fault) |
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| 1993 Buick Skylark Custom 3.3L No Start VIN: 1G4NV54N8P hey guys, i have one thats driving me nuts this will be a bit long, sorry. to start with i had no CEL & could not communicate with the ECM. i repaired a problem with 1 power wire & found a bad ground which got me a working CEL & communications. hit the starte... |
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| 1995 Buick Riviera 3.8L Misfire, MIL Lamp on, Stumble VIN: 1G4GD2214S Hello all, I'm having some trouble with this Buick. The complaint is the Service Engine Soon light comes on and the vehicle bucks/skips/stumbles. I verfied the complaint and pulled code 341 Cam/Crank Error. Cam/Crank error on the scanner does build counts when... Trouble codes: 341 (Cam/Crank Error) |
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| 1986 Cadillac DeVille Touring 4.1L Stall, RUNS FOR 2 SECONDS VIN: 1G6CD6984G Code 53 diagnostic tables are pretty weak. Car runs for 2 seconds, then dies as if turning off the key exactly like GM passkey and theftlock systems, although I remember the system Caddy uses as killing the starter and fuel with no start at all. Do I remember ... Trouble codes: 53 (missing ignition signal) |
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| 1993 Cadillac Seville 4.9L rear end VIN: 1G6KS52B7P Hitting potholes on road, rear end feels like it moves over, Ive installed suncore industries coil over shocks in rear, replaced independent suspension bushings to frame to no avail Im thinking replacing the upper bushings that hold the suspension to body next... |
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| 1995 Cadillac DeVille 4.9L Poor Idle Quality, Misfire VIN: 1G6KD52B5S CADILAC DOCTORS HELP! CUSTOMER HAS A 95 DEVILLE THAT HAS A SHAKE AT IDLE AND A HEAVY MISS UNDER LOAD. CYLINDER DROP TEST DOES NOT SHOW ANY ONE CYLINDER BEING WORSE THAT ANOTHER. HAS HIGH HC READINGS 990ppm. ALL NEW IGNITION. PCM AND DISTRIBUTOR WAS REPLACED A ... |
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| 1998 Chevrolet Astro 4.3L Poor Idle Quality, Hesitation, MIL Lamp on VIN: 0574323589 continues to set a crank sensor code. replaced sensor twice with dealer part. replaced computer. wiring checks good. vehicle has rebuilt long block. problem didnt occur before long block was installed. starts and runs good except for the rough idle after warm ... Trouble codes: P0131 |
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| 1998 Chevrolet S10 2.2L compressor VIN: 1GTCS1947W This one came in with a dead compressor (not building any highside pressure). We replaced the compressor, accumulator, manifold assembly, the condeser, and flushed the evaporator... Truck left with good pressures blowing ice cubes... Came back 3 days later wit... |
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| 2000 Chevrolet Silverado 1500 5.3L Pedal, Master cylinder VIN: 2GCEK19T1Y Owner took truck to Florida in fall towing a 31 ft trailer. Truck remained in FL all winter and back to PA in late April. Brake pedal resistance has steadily been lessening. Going down street at 25 mph and something pops out into the street, hit the pedal, goe... |
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| 2005 Chevrolet Silverado 2500 HD 6.6L Rear Tires VIN: 1GCHK29235 HI all of you out there have a custermer that brougt this truck to dealer a few times becouse the rear tires on this truck are wearing fast we put 4 new tires on at 17000 miles and he rotates them evry 6,000 miles or so and now the rear are just abuou wore out... |
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| 1992 Geo Tracker 1.6L No Start VIN: 2CNBE18U2N vehicle showed back up with intermittent stall and no crank.ran codes and had code 42 crank angle sensor.are they calling the crank sensor the hall effect switch or cam sensor located in the distributor.if so dealer says no parts are available,will have to buy... Trouble codes: 42 (crank angle sensor) |
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| 1997 GMC K2500 Sierra SL 6.5L No Start VIN: 1GTGK29F9V this truck will not start after it sits for 3 or more hours. it will crank but not fire. fuel filter has air in it when this occurs. after i bleed it, it starts and runs fine. is there a check valve somewhere that is not working allowing fuel to drain back to ... |
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| 1994 Oldsmobile 88 Royale 3.8L MIL Lamp on VIN: 1G2HN52L7R Hi, This vehicle has a re-occuring Cam sensor code. Have gone through diagnostic tree and found no cause. Replaced cam sensor but code still reoccures. Code can set imeadiatly upon starting, or when driving vehicle, or just when left idling. Code usually wil... Trouble codes: P0342 (Cam sensor failure) |
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| 1999 Oldsmobile Alero GL 2.4L Surge, Cuts out, Misfire VIN: 1G3NL52T7X Hi,everybody i have a crazy one on my hands.no codes has interment misfire under load when cold mainly.parts as listed have been replaced twice to conferm part were good.I have tested fuel presure,at modual i tested crank sensor & module out puts,tested cam se... |
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| 1999 Pontiac Grand Prix SE 3.8L radio VIN: 1G2WJ52K1X We retrieved the code pressing buttons 2/3 then am/fm when I called the dealer the service guy I normally deal with was on vacation. The guy filling would not help me except to have me bring it over for a fee, so I'm turning to iatn, hope someone can help. If ... |
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Fixes & Summaries for GM
| Fix/Summary | Answers | |
| 1998 Buick Century Custom 3.1L engine VIN: 2G4WS52M1W some suggested intake gaskets, but that was first thing checked and they are fine, but lifter replacement would require thier changing anyway... I am recommending a long block since the genearal recommendation from most of you is that route. I dont mind the wo... |
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| 1993 Chevrolet K2500 Cheyenne 6.5L No Start VIN: 1GCGK29FOP I want to thank everybody for their help & especially those who suggested the seal at the filter for that was the problem. I took the cap back off and looked at the seal, it has a flat side and a ribbed side. Had it up-side down and the steel ring in the wrong... |
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| 1994 Chevrolet C2500 6.5L engine VIN: 1GCFC24S4R I found that the truck had compression readings in most of the cyls. are below 200 psi. I was able to get the left bank up to 240 psi. but still wouldn't start. Thanks for everyones help. |
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| 2001 Chevrolet Tahoe 5.3L compressor VIN: 1GNEC13T91 First of all thanks for all your help guys I know how hard it can be to take time to help some of us on here... Anyway I did replace the compressor again... GM uses a denso compressor which had been updated to revise this problem... I received the first compre... |
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| 2003 Chevrolet Silverado 1500 5.3L engine VIN: 1GCEC19T83 customer opted for a salvage yard engine.this vehicle is fixed,gone & paid for.pulled oil pan off as soon as it left,the block was cracked, hairline,stain was visible,middle of passengers side. i learned a lot about this engine &the hazards of boldly going whe... |
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