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Prev Professional Automotive Repair Technical Discussions for June 23, 2008
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2000 Buick Century Custom 3.1L starting
Hi everyone. I got a 2000 Buick Centry 3.1L that came in for routine service along with a hard start problem. The battery tested bad, and got replaced with a new ac delco battery. After replacement the vehicle would not start, no crank, and dash lights would f...
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1993 Cadillac Eldorado Touring 4.6L Power Mirror VIN: 1G6EL1292P
Hello fellow Techs, I have a '93 El Dorado driving me nuts. It has an issue with the power mirrors. From mirror switch if placed in the left hand position, mirror on driver door functions normally except has no "down" control. If mirror control is switched to ...
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1997 Cadillac DeVille 4.6L LR speed sensor reading incorrect VIN: 1G6KD52Y3V
Good afternoon everyone. I have a Cadillac that brings up no codes, yet will kick the ABS in at very low speeds. With a scan tool on it and watching the four sensors, the left rear will drop to zero at 3-4 MPH. All other sensors will come to zero MPH in a norm...
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1985 Chevrolet Monte Carlo 4.3L oil guage readings VIN: 1G1GZ37Z0F
I have a 1985 chevy montecarlo,4.3L,V6,TBI 37,500 MILES,MOTOR WAS REBUILT IN JUNE OF 1999 OIL PRESSURE 25 PSI ON GUAGE IN CAR AND ON MY OIL PRESURE TESTER, FLUID LEVEL GOOD,NO PINGING OR KNOCKING,CAR HAS LOTS OF POWER,DOES NOT MISS OR SHAKE,WHEN GOING, GOES UP...
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1996 Chevrolet K3500 Cheyenne 7.4L Brakes VIN: 1GCHK39J3T
Ive been fighting this brake pull for a long time now. The customer tends to bring it in when he gets the time so i can look at it here and there but i cant find any reason why this truck would pull. All the brakes are new front and rear clipers, pads, rotors,...
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1996 Chevrolet Corsica 3.1L Hesitation, Surge, Cuts out VIN: 1G1LD55M5T
car was good for a couple of days came back with complaint of no power after it warmed up at times, test drove, problem acted up under light acceleration its like a miss but none show up on genysis plugs showed signs of over heating so replaced plugs & wires p...
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1999 Chevrolet Silverado 1500 5.3L security sys VIN: 2GCEK19T8X
Security system is preventing us from starting this vehicle. It will start and run for a couple of seconds and then die. Originally it was blowing fuses to the ECM when we turned the key on. We replaced the fuel pump and cured that issue. I cannot find out a...
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2004 Chevrolet Impala 3.4L Blower Motor VIN: 2G1WF52E54
The complaint on this car was that the blower motor has a delay of about 20 seconds before turning on. I tested voltage and everything looks good. I found nothing saying if it is supposed to have delay. Was thinking maybe in the blower motor control processor....
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1989 Pontiac 6000 LE 2.8L No Start VIN: 1G2AF51W7K
This time it has spark fuel pressure and injector pulse vehicle will start then stall almost acts like it has a security system but doesnt have tried new module and a different ecm took all back apart and put back together found no problem any where this thing...
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Fixes & Summaries for GM
Fix/Summary Answers
1995 Chevrolet Blazer 4.3L Surge VIN: 1GNDT13W1S
Unfortunately this vehicle has not returned to continue diagnosis. I did get some good ideas however. Seth from New York suggested that I should remove the intake runner control to inspect for fuel. Pulling the runner control should be easier than pulling t...
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2000 Chevrolet C6500 7.4L ebcm VIN: 1GDE6H1B1Y
After replacing the EBCM, could not communicate with the brake module using an updated MasterTech. Borrowed a friend's Tech2, Had a code saying that the vehicles trim is not set and gave me the option to set it. After selecting the correct trim level, cleared ...
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2001 Saturn L300 3.0L MIL Lamp on, No power VIN: 1G8JW54R81
After verifying power and ground circuits, sent the vehicle to Saturn dealer, they replaced the PCM, started and ran fine. I did end up borrowing a neighbor shop's MasterTech, that unit would communicate with the TCM, but not the PCM. That made me fell better ... Trouble codes: P1516.
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