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Prev Professional Automotive Repair Technical Discussions for October 14, 2006
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Open Help Requests for GM
Help Request Answers
2002 Buick Century Custom 3.1L headlights VIN: 2G4WS52J22
Hi Group, Customer says going down road at night & turned a corner, headlights went out,pulled headlight switch on,come back on,then went out again,pulled dimmer switch,come back on.Checked headlight switch,not burned.Looking at archives sounds like a bad BCM....
1954 Chevrolet 3100 235CID crankshaft VIN: H54A005814
need crank specification and procedure on installation of bearing shims
1993 Chevrolet K1500 Cheyenne 5.7L Excessive Emissions, Hesitation, Surge, Cuts out, Misfire VIN: 1GCEK14K5P
Customer brought in this truck for a surge / misfire at low speeds -- Checked tune up and replaced cap and rotor. Truck runs great otherwise and is well maintained (no other customer complaints) except on light throttle conditions and tip-in bucks and misfires...
2001 Pontiac Grand Prix GTP 3.8L Stall VIN: 1G2WR121X1
I try the learning procedure for 10 minutes koeo and nothing happen.

Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick LeSabre Custom 3.8L MIL Lamp on VIN: 1G4CWS2KSX
Thanks to all who helped. After further testing there was no data being sent from the bcm to the pcm. A new bcm was the answer. Trouble codes: P1602, P1610, B1159.
1994 Chevrolet C1500 5.7L No Start, Poor Idle Quality, Hesitation, Cuts out, Stall, When started, dies VIN: 1GCEC14K7R
Alot of the information I received had already been checked, but testing or slaving in a known good part. The vehicle left our shop without it being repaired. We essentially checked EVERYTHING with the exception of the main wiring harness to the ECU. If I hear...
1999 Chevrolet Silverado 1500 5.3L Misfire, MIL Lamp on VIN: 1GCEC14T3Y
first off i have to thank everyone that posted. rob from iowa and dave from idaho hit this one dead on it. was the fuel pressure regulator.the diaphram had failed and the vacuum line was pulling in raw fuel.i was originally going to put a fuel pump in as the... Trouble codes: P0300.
2000 Chevrolet Express 2500 5.7L Poor Idle Quality, Misfire, MIL Lamp on VIN: 1GCFG25R2Y
First thank you to the nine people that replied to me. Unfortunately there was no help from the techs that replied. The problem that was found is that the regulator inside the upper manifold was leaking gas into the right bank of the engine causing it to run r... Trouble codes: P0300.
2000 GMC Sierra 2500 SL 6.0L 4wd VIN: 1GTGK2448Y
thanks to all the replies i replaced the transfer case and that fixed it thank you
2000 GMC Sierra 1500 SL 5.3L Low oil pressure VIN: 1GTEC19TXY
Customer opted to trade the vehicle in. Did not get to pull the pan to check any of the items suggested.
1998 Pontiac Grand Prix GTP 3.8L trac light VIN: 1G2WP1212W
my tach signal out of the ecm wasnt ataining high enough voltage so the tach was inop and the ebtcm wasnt getting its propper signal. i could make the tach jump by putting a test light to positive and toggling tach wire. ecm was the fix here. thanks for the re...
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