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Prev Professional Automotive Repair Technical Discussions for September 6, 2008
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Open Help Requests for GM
Help Request Answers
1999 Buick LeSabre Custom 3.8L steering pump VIN: 1G4HP52K6X
I have to list this even though it may seem obvious after hearing the whole story. This vehicle came to us with the accessory belt slipped off it's pullys and power steering fluid around the pump area. Upon further investigation it became clear that the front ...
2001 Chevrolet Astro LS 4.3L Fuel Gauge, Temp Gauge, Instrument Cluster VIN: 1GNEL19WX1
Hey guys, I need some help on this one. First of all, this car came in stalling, bogging, and hard to restart after stalling. I've checked all of the basics and came down to a bad aftermarket fuel pump pushing not enough volume. Replaced it with an ACDelco par...
2004 Chevrolet Trailblazer EXT LT 4.2L oil gauge and speedometer VIN: 1GNET16S84
I am leaning towards the cluster. Just wanted to throw this out there to get a few opinions. The oil pressure will run 60psi and all of a sudden drop to -0- then may move around from there. The speedo is doa. The speed sensor does read on my monitor though.

Fixes & Summaries for GM
Fix/Summary Answers
1999 Cadillac Seville STS 4.6L #8 PCM batt fuse VIN: 1G6KY5497X
Upon further inspection based on the replies, found harness casing had somewhat of a kink near the brake booster by the firewall. Opened case and found both the orange and green wires worn and shorting. Repaired wires and all is good. Thanks to all who replied...
1986 Chevrolet Corvette 5.7L Poor Idle Quality, Stall, Misfire VIN: 1G1YY0787G
first i want to thank everyone who replied to this post. we replaced the ecm and the car runs like a champ. oh and customer says he is going to leave car repairs and modifications to the pro's lol. jay
1997 Chevrolet K1500 5.7L master cyl. VIN: 1GBEK19R3V
hello gang. thanks for the quick replies, after reading everything i decided to try new calipers, bingo!! I really not sure what was the real deal with the old ones but it works. three of us read and studied reply after reply and come to the conclusion that th...
2003 Chevrolet Silverado 1500 5.3L MIL Lamp on, Throttle response VIN: 1GCEC19133
Ya gotta love this group. I had a lot of good responses, all well thought out including GMs preliminary bulletin and an offer of a training tape from David. Several mentioned the accelerator pot, the actuator, ground wires, and dirt in the throttle body. Ei... Trouble codes: P0120 (tps), P0220 (tps), P1515 (Throttle actuator position), P1516 (Throttle actuator position), P1518 (Serial data failure).
2003 Chevrolet Impala 3.4L Poor Idle Quality VIN: 2G1WF52E43
Thanks for the help the ECM was the problem. All test on ECM showed that tha ECM was working fine. Then I took two test lights and hooked them up to the hi and low on both coil sides of the IAC circit. then I activated the IAC with my scan tool and only one wa...
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