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Prev Professional Automotive Repair Technical Discussions for February 4, 2014
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1996 Buick Park Avenue 3.8L blower motor VIN: 1G4CW52K7T
Thank ahead.I would like to know acceptable amperage draw on heater blower motor to keep from damaging fan speed module on atc.
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1999 Chevrolet Silverado 1500 5.3L Battery VIN: 2GCEK19TXX
Vehicle came in for dead battery every 2 days. Performed draw test after all modules should be asleep. Showed 250ma. Removed TBC fuse and draw goes to 4 ma. With solus pro hooked up, all inputs to bcm are off and inactive as you would expect. Only strange thin...
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2007 Chevrolet Impala LT 3.5L pressure control solenoid VIN: 2G1WT58K27
Got this Impala here. Keeps throwing a P0961 code for pressure control solonoid system performance. I started diagnosis by unplugging the transmission control module and testing the circuitry of the PC solonoid. Everything tested within spec. My trusty flow ch...
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1993 Oldsmobile Cutlass Supreme S 3.1L Hvac VIN: 1G3WH54T8P
customer complaint is that the heater stopped blowing hot. We checked the inlet and outlet temp on the heater hoses and found that the inlet was at operating temp but the out let was at 85 degrees. We removed the panel under the dash and checked the heater cor...
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1997 Oldsmobile Bravada 4.3L misfire VIN: 1GHDT13W7V
This thing is driving me nuts,has a misfire usually cold,at about 1500 to 2000 rpms.misfire occurs on cylinder 3 and 4 mainly,but have seen all cylinders misfire.And after it warms up good the misfires go away...I have scoped the ignition system and have seen ... Trouble codes: P0300, P0147
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Fixes & Summaries for GM
Fix/Summary Answers
1998 Buick Regal LS 3.8L brake lights, interior lights VIN: 2G4WB52KXW
First of all I want to thank all the techs who took the time to answer my help request. What I eventually found was the wiring harness under the rear seat was corroded from moisture. I probably kneeled on the spot when i had the seat out to install the rear sp...
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2001 Cadillac DeVille 4.6L trunk, doors VIN: 1G6KD54YX1
Hello everyone. Thanks for the replies. I got this one figured out. At first I thought it could be the key fob so I removed the battery and placed it away from the vehicle. The trunk would still pop open. So I scanned the vehicle for codes and there were a ton...
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2007 Chevrolet Uplander 3.9L rear heat VIN: 1GBDV13127
Most replies were to use a vacuum fill tool to fill cooling system which we do not have. The Service manager took it home a couple of days and we are now getting heat from front and rear.
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2000 GMC Jimmy Diamond Edition 4.3L key in ignition audible warning VIN: 1GKDT13W6Y
The problem was the wrong lock cylinder, it was the only one offered for that year but when compared to a used one you could see the physical difference. It actually was a hole that triggered the switch was not big enough so it thought the key was still in.
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2000 GMC C3500 Sierra SL 6.5L MIL Lamp on VIN: 1GDJC34F1Y
Thank you all for your time. The fuel sample from this truck was dark, dark, yellow. So I pulled the fuel sending unit (after I found out that the customer had a fuel level gauge issue) and check the tank, pickup tube, and sender. The tank was overfull and the... Trouble codes: P0251 (Injection Pump CAM System), P0370 (Timing Reference High Resolution System Performance).
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2003 GMC Yukon Denali 6.0L Suspension VIN: 1GKEK63U23
after 2 days of frustration , pull the right front seat, check the wiring & ground, check the carpet for wetness all tested good, order& Install used ABS Module , caliberate tire size & my problem is solved.
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1990 Oldsmobile Cutlass Ciera 3.3L fuel pump fuse VIN: 2G3AL54N7L
sorry for the delay in posting this reply I was in the hospital for awhile. anyway the car is still here. has started and been driven almost daily since this was posted. the car has been on hoist wiggled bounced shook wire harness opened and inspected. custome...
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