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Prev Professional Automotive Repair Technical Discussions for January 13, 2007
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Open Help Requests for GM
Help Request Answers
1991 Chevrolet Blazer Silverado 5.7L Poor Idle Quality, Poor Fuel Economy, Timing Unadjustable VIN: 1GNEV18K3M
Hey guy's I've got a good one.. Ater completing a major tune, the vechicle still had some what of a rough idle. Checked ignition timing with test lead disconnected and found timing to be @ 14 to 16 degree's advanced!Adjusted timing back to recommended 0. Vec...
1997 Chevrolet Blazer 4.3L No Start, Stall VIN: IGNDT13WIV
I am about to pull my hair out on this one. She calls every couple weeks or so. Won't start. I get there starts right up. Made her leave it with me for 4 days, could not get to not start. Have checked everything I can think of. All things check out okay. The o...
1997 Oldsmobile Aurora 4.0L interior lights VIN: 1G3GR2C8V4
no true repairs or testing done to car code cleared and driven bad ground? bad module? a starting point? any advice or info appreciated guys`
1998 Oldsmobile Bravada 4.3L blend door VIN: 1GHDT13W0W
The blend door stays full hot all times. Scan tool drives door open and closed. however sometimes osillates. plugged in new blend door motor without complete install. same. installed used control head.. same thing... always full hot. codes for blend door circu...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Buick Regal GS 3.8L Instrument Cluster VIN: 2G4WF5214X
Sorry for the long delay to post a 'FIX'. The customer that purchased the vehicle is a college student and was on Christmas Break for a couple weeks. We got her in Thursday and scanned for codes again for the SES and TRACTION CONTROL lights and none were found...
2000 Buick LeSabre Limited 3.8L no 4th gear VIN: 1G4HR54K3Y
Thanks to all that helped- per replys, problem is most likely worn hub/splines- customer still driving until can schedule down time at trans shop. thanks again
1993 Chevrolet S10 Blazer Tahoe 4.3L Cuts out, Stall VIN: 1GNDT13W7P
Thanks to all who replied. I unfortunatly couldn't give a lot of info to you, but I believe the vehicle is repaired at this point. I replaced the module after watching a noid light and a spark tester together while the engine was running, of course the vehicle...
1997 Chevrolet Lumina 3.1L vats VIN: 1G1WL52MXV
Found it! Right above the glove box. Problem turned out to be the VATS module, it would enable fuel but not ground the starter relay. Customer declined module replacement so I wired around the starter relay. He's ok with the security light.
1997 Chevrolet Cavalier 2.2L Cooling Systems VIN: 1G1JC1244V
As many members said the head gasket was the main trouble making this car run hot. Sent the head out and they had to mill it 10 thousands to make it right. I have to still find out why it runs rough now. I think the compression is just to high. I am going to...
1999 Chevrolet S10 2.2L heating VIN: 1GCCS1449X
well my fellow techs this one is fixed, klay from Iowa pinpointed it to the head gasket and number four cylinder, pulled head off and head gasket around cylinder four was bad. I just dont understand why the motor did not overheat instead of under heating, but ...
2001 Chevrolet Tahoe 5.3L battery VIN: 1GNEK13TX1
Thank you to everyone who replied to my help request. Glenn from New Jersey was especially helpful. Your recommendation to pull all of the fuses and work back from there did the trick. As you said, there may be two circuits affecting the vehicle. Sure enough, ...
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