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Prev Professional Automotive Repair Technical Discussions for September 2, 2006
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Open Help Requests for GM
Help Request Answers
1997 Buick Park Avenue Ultra 3.8L Hesitation, Surge, Cuts out, Misfire, MIL Lamp on VIN: 1G4CU5212V
THIS VEHICLE CAME IN WITH A CHECK ENGINE LIGHT ON AND NO POWER. HAD A P0300 SET WITH MISFIRES RECORDED ON ALL CYLINDERS. DURING A ROAD TEST UNDER HARD ACCELERATION THE ENGINE WOULD PING SO BAD IT SOUNDED LIKE IT WAS COMING APART. THE FIRST THING I FOUND WAS A ... Trouble codes: P0300 (random misfire)
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1993 Cadillac Eldorado Sport 4.6L Surge VIN: 1G6EL12Y4P
Hello fine techs: This El dorado came as a no-start. We found wires from crank sensors were inverted at ign. module. We repaired them and car now starts but idle is always surging between 800 and 1500 rpms. We tested for vacuum leaks with smoke machine and no... Trouble codes: P0030
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1996 Cadillac Seville SLS 4.6L TCC slip hi VIN: IG6KY529IT
Hello all, this seville happens to be bosses wifes car and has a reoccuring trans code after I serviced it. I even opened it back up and checked to make sure filters didn't fall out and all seals fit good. The code is a po741 high torque converter slip when co...
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2000 Chevrolet Prizm 1.8L No Start, Surge, Cuts out, Stall VIN: 1Y1SK5287Y
Customer said they had an oil change at a local quick-lube(Walmart), when they picked it up it seemed to lack power. Then when the lights were turned on, it would die. Car was brought here. We checked the electrical system, the headlights do not work, and when...
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1998 Oldsmobile Aurora 4.0L LCM Module VIN: 1G3GR62C4W
I know these vehicles are electrical nightmares but... The lighting control module under the left side of the dash intermittantly starts rapidly clicking. This happens at least once a day. I have checked powers and grounds and ran a complete continuity and ohm...
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1997 Pontiac Grand Am SE 2.4L No Start VIN: 1G2NE52T2V
I have a 97 grand am, 2.4 liter with no spark on cylinders 1+4. I am currently out of work and have no access to a scaner or scope. I did rent a generic code reader from the autoparts store which obviously was just about useless. The only code I had was po300....
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2000 Saturn SL2 1.9L Misfire VIN: 1G8ZK5279Y
Well, I can't find a crank sensor on this piece. However I do know I am losing spark to cylinders 1 & 4 when it's cold, sometime warm it runs great, but most of the time it misses. I have swapped coils, I have even ran it without the coil on the module to watc... Trouble codes: P0340 (Cam Shaft sensor), P0341
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Fixes & Summaries for GM
Fix/Summary Answers
1995 Chevrolet Blazer 4.3L Poor Idle Quality, MIL Lamp on, HARD BRAKE PEDAL VIN: 1GNCS13W4S
This vehicle got progressively worse, from a rough idle, to a very bad misfire under acceleration, to a nasty hesitation accompanied with the misfire and finally no power. It would basicly only idle nothing much beyond that. First double checked everything tha...
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2003 Chevrolet Silverado 3500 6.6L BlowBy Tube VIN: 1GCJK33133
Sorry to have taken so long to close this one. The truck did come back a couple of times, but the tech who was working on this one never did find the reason for the oil to be pushing out the blowby tube. I agree with most of you it most likey being blowby past...
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1999 Pontiac Grand Prix GT 3.8L No Start VIN: 1G2WP12KXX
Hello all, Thanks for the replies. About a third of you hit it right on the head. There were also some other very good suggestions and a few weird ones. John and [...] both correctly pointed out that the low cranking vacuum could be caused by a deteriorate...
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1999 Pontiac Montana 3.4L Misfire VIN: 1GMDU06E8X
Well, I had many good ideas from all who replied. Joe helped me eliminate my intake leak question by telling me to remove the pcv valve from the cover and plug both covers with my fingers while running, if I had felt a vacuum (which I didn't) I would have had ... Trouble codes: P0300 (Random Cyl. Misfire), P0102 (MAF Voltage low).
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2000 Saturn SL1 1.9L drl system VIN: 1G8ZH5282Y
After rechecking all wiring of drl to bcm module camt to the conclusion that the program was altered in the memory,of bcm.Inquired to dealer annd got as answer that it was possible but not a frequent occurence.Sent cust to dealer to reflash bcm and will keep y...
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