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Prev Professional Automotive Repair Technical Discussions for March 15, 2008
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Open Help Requests for GM
Help Request Answers
1994 Buick Century Special 3.1L MIL Lamp on VIN: 1G4AG55M5R
The car had no code when it came in for a leaking head gasket. Changed the head gasket, started the car and the code came on I have no idea what caused it to come on. The car runs good, has no driveability problem but the light comes on and then it goes off an... Trouble codes: P1640 (Computor code)
1999 Chevrolet Silverado 1500 4.8L No Start VIN: 1GCEC14V8X
Have a nasty one people. The truck had a motor installed at another garage. The truck had a miss and ran poorly. We had to redo the intake and plugs. We also installed a crankshaft sensor and did a relearn. Truck is back and no start. W checked powers and grou... Trouble codes: P0336
1999 Chevrolet Corvette 5.7L No Start VIN: 1G1YY22G2X
Hi techs, My question today is regarding car's modification for car racing. I am working on this chevy corvette 1999 to modify it and get it ruled for car racing. The removal of the antilock brake system is part of the rules to get the car conform for that ra...
2003 Chevrolet Malibu LS 3.1L cruise control VIN: 1G1NE52J83
I have a 2003 chevy malibu with 61000 miles on it. The problem is that when you turn the cruise control on or off it makes a clunking noise from the right front corner of the car. It does not do this with just using the pedal and brakes so it rules out all but...
2003 GMC Yukon XL 1500 SLE 5.3L MIL Lamp on
truck came in with mil on. code po125 stored. replaced t-stat cleared code and all was fine for a few months. came in for lof and noticed mil back on. same code. cust. said it just came back on. dealer told us to replace t-stat housing, so we did. came back wi... Trouble codes: P0125
1985 Pontiac Fiero GT 2.8L MIL Lamp on VIN: 1G2PG3791F
This Fiero was in a few months back for a no start. The fuel pump relay and the oil pressure switch were both bad. The vehicle breaks down on a road trip and tech says the ECU won't turn on the fuel pump and installs a toggle switch to get my customer home. A...
2001 Pontiac Grand Prix SE 3.1L Hesitation, Surge, Cuts out VIN: 1G2WK52J21
vehicle stumbles on light acc.Power braking it runs great.Only accurs when front axle is turning.Oxygen sensor goes into open loop .runs great when stepping on the brake and immediately goes into closed loop.Thanks in advance if you can help
1999 Saturn SL1 1.9L Trans Range Sensor VIN: 1G8ZH5283X
PROBLEM: Error Code P0706 - Adjusted transmission ranger sensor as per Alldata. (Alldata says adjust switch in Drive until continuity exists} We successfully installed a aftermarket new trans range sensor. We successfully adjusted it to continuity in Drive (t...

Fixes & Summaries for GM
Fix/Summary Answers
2001 Chevrolet Venture LS 3.4L No Start, Cuts out VIN: 1GNDU03E71
2003 Pontiac Vibe 1.8L Wheel Bearing Noise VIN: 5Y2SL62833
The fix for this vehicle was a transmission overhaul. Dennis hit the nail on the head, the noise was coming from the differential. The strange part was that the noise changed pitch when swerving which would make you believe it was a wheel bearing, the left one...
1997 Saturn SL1 1.9L Ignition VIN: 1G8ZH5283V
Rechecked all wiring to confirm that everything was sound...this morning I figured I'd take the plunge and replace the PCM in the car with the extra unit supplied by the other shop...unhooked the battery, pulled the dash and swapped PCM's, reinstalled everythi...
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