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Prev Professional Automotive Repair Technical Discussions for March 25, 2014
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Open Help Requests for GM
Help Request Answers
1998 Chevrolet K1500 Cheyenne 5.7L Poor Idle Quality VIN: 2GCEK19R0W
working on my personal truck at home,missfire at idle,driving seems fine,i have a good parts truck,changed plugs wires,cap,injector asy.,un hooked o2 sensors.compression is 140lbs,60-70 running,have injector pulse,now have a vacuum leak at top of intake around... Trouble codes: P0306
2002 Chevrolet Silverado 3500 LS 6.6L Fuel gauge VIN: 1GBJC34142
Fuel gauge on cluster passed sweep test and low fuel lightan no cluster codes. But only goes to one peg over 1/2 way up. Works good on sender set at 1/2 tank or lower. PCM and instrument cluster only reading from 6 to 60 % fuel level even with sender at full f...
2005 Chevrolet Suburban 1500 LT 5.3L auxiliary control VIN: 3GNEC16Z95
When this truck was in Boston, the customer had a dvd / entertainment module installed where the rear HVAC auxiliary control goes. Now they live in Texas & need all the AC they can get, but the rear doesn't work, even with the driver controls for it. My quest...
2008 Chevrolet Express 2500 4.8L No Start VIN: 1GCGG25C48
Ok i am scratching my head on this one. I have a chevy van came in on hook died and no start. started with checking fuel pressure and had none back at tank. so i dropped tank and put power to pump and got 50 psi pressure. I reinstalled the tank and tried to st...
2006 GMC Sierra 2500 HD SLT 6.0L fuel gauge VIN: 1GTHK23U76
fuel gauge inop. empty + low fuel light on.code po 463 fuel level sensor open.does work with scanner doing a sweep. disconnected connecter at sender and jumper sig. to ref. wires cleared code. still reading empty. signal wire reads 5 volts.ref.wire strong grou...
2007 GMC Yukon Denali 6.2L Electronic VIN: 1GKFK638X7
Hello, I hope someone can help us with this Yukon Denali. It first came in with a U0101 communication fault with TCM. We found no power from the fuse box to TCM. We fix the circuit from the fuse box to the TCM which is in the transmission. We know have comunic...

Fixes & Summaries for GM
Fix/Summary Answers
1997 Buick LeSabre Custom 3.8L Idle VIN: 1G4HP52K1V
Found a resistance break within the ground strap to the firewall causing the voltage to drop by .2 once that was repaired idle was perfect and problem solved. thank you to every one that helped.
1994 Chevrolet S10 4.3L No Start VIN: 1GCCS14ZXR
First of all I want to thank everyone who gave me advice on this issue that I was having with this s10. To the ones who suggested that the exhaust may be clogged were right. I removed the O2 sensor and the truck started and ran. I unhooked the catalytic con...
1996 Chevrolet Tahoe LS 5.7L Poor Idle Quality, Hesitation, Misfire VIN: 1GNEK13R7T
great help guys! those who said crossfiring in distributor cap nailed it! I could see no visual problems, but since 3 & 5 are next to each other in the cap, it made sense. I even got a few responses before I went to bed last night. also, great info on the ... Trouble codes: P0300.
2004 Chevrolet Tahoe LS 5.3L MIL Lamp on VIN: 1GNEK13T04
Hi guys,i replaced the connector at the throttle body with a pigtale from the dealer and that seems to fix the problem. thanks again everyone for your help. Trouble codes: P1125 (App sensor intermittend problem).
2008 Chevrolet Impala LT 3.5L Oil Leak VIN: 2G1WT58K68
Thanks for the help but I made this one harder then it is. New oem gasket and sealer on the bolts and all is well.
2009 Chevrolet Traverse LT 3.6L steering Angle Sensor
Well the car is fixed. In short the problem was the scan tool. I borrowed a tech II and reset the zero position with no problem. Auto Enginuity and Alldata had deceptive information. Auto Enginuity MAY have worked but I believe it screwed up when it tells you...
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