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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 21, 2006
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Open Help Requests for GM
Help Request Answers
1991 Buick Regal 3.1L 2-1 Shift VIN: 2G4WB54TOM
Well guys, this is probably a no-brainer but I need help. This transmission downshifts from 2-1 very harsh coasting to a stop and downshifts from 3-2 just as bad. Upshifts work great. We have adjusted dtent cable and no change. I don't do alot of transmission ...
2000 Cadillac DeVille 4.6L Misfire, MIL Lamp on VIN: 1G6KD54Y8Y
This Deville originally came to me because there were a number of diplays not showing on the dash and the Service Engine light was on. All of the problems started after the owner installed a new battery. He said he replaced the battery because the positive pos... Trouble codes: P0300
2000 Chevrolet C3500 5.7L driveability VIN: 1GCG24R34Y
this vehicle has my mind fried. this is a two part question. 1. after i changed the spark plugs, cranked it up still ran bad, hooked scantool up and monitered data screen. every thing looks good except the 02s arent switching and staying rich, if i press the t...
1997 GMC Sonoma SL 4.3L No rear brakes VIN: 51501GTDT1
This truck every time that it comes in the shop has no rear brakes working at all(like no pressure), after we put all this new components trying to fix this problem, guess what? the problem still here! as far as we got we this, is that we put the unit on the l...
1999 GMC Jimmy SL 4.3L long crank time cold VIN: 1GKDT13W1X
Vehicle came in with a long crank before starting when first started cold only(overnight cold)Will start fine rest of day.Verified car will crank 5-8 seconds before starting up cold. Checked initial fuel pressure,It is in specs . Tested for bleed down of fuel ...

Fixes & Summaries for GM
Fix/Summary Answers
2000 Chevrolet Silverado 1500 5.3L Hesitation, Surge VIN: 1GCEK19TXY
Sorry for the long wait on this fix, I had to wait to hear from the customer. They took it to GM for a 'reflash'. I saw a copy of the invoice and can't make heads or tails of it, but says reflash took care of the problem. I will call GM and see if they can int...
2003 Chevrolet Silverado 2500 6.0L MIL Lamp on, No Accel. VIN: 1GCHK24U33
Well I do not have too many technical notes to provide, but I did fix this vehicle with the help of your advice. Everybody that replied stated that they had seen this code before, and that putting a new throttle body on is what the fix was. The only thing that... Trouble codes: P1516.
1998 Oldsmobile 88 Royale 3.8L excessive crankcase vaccum VIN: 1G3HN52K4W
thank's for all the good response's. i checked for orings in the new plenium, witch came with a new pcv in it and sure enough they were missing. installed oring and noise is gone. thank's again!!! kip
2000 Oldsmobile Intrigue GX 3.5L Stall, BLOWS FUSE AND DIES VIN: 1G3WH52H6Y
isolated pcm and bcm circuits, checked all underhood wiring, wiggle tested, found vehicle would blow fuse at almost same spot on highway, isolated pcm and bcm circuits, problem is in bcm side, unplugged bcm and test drove without failure, customer declined fur...
1997 Pontiac Sunfire GT 2.4L Poor Idle Quality, Misfire VIN: 1G2JD12T5V
First of all, Thank you to everyone who took the time to read and reply. I really appreciate your help. The problem with this vehicle was a cheap new aftermarket coil cover that tested good when doing a resistance test. I picked up a complete used coil, module...
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