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Prev Professional Automotive Repair Technical Discussions for March 3, 2015
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
2000 Buick LeSabre Custom 3.8L blower motor VIN: 1G4HP54K6Y
hi guys i have a 2000 LeSabre custom Intermittent blower motor another shop has changed blower motor and fan resistor and check wiring it came to me had 2 codes B2628 Passenger compartment dimming 2 circuit high and B2643 delayed exterior lighting control circ...
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2006 Cadillac DTS 4.6L park assist sensor VIN: 1G6KD57YX6
car was brought to us with sensors and harness already replaced, codes 954,955, symptom 08, invalid signal lf outer,lf middle. tested signal wires at 7.8 volts, all the same, front and rear, no shorts to power or ground. replaced module, getting same codes.
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2002 Chevrolet Corvette 5.7L Unknown VIN: 1G1YY32GX2
intermmitently all the lights come on on the dashboard, while driving , and it sets the following communication codes,u1000, u1255, u1064. u1096, u1016, and u1301, and c1242 and passenger window stops working , passenger door locks, and passenger mirror, it se...
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2005 Chevrolet Suburban 1500 Z71 5.3L Electronic VIN: 3GNFK16Z05
We replaced the ABS module because it was missing with new GM part. We cannot get it to program. We are using the CarDaq-plus and delco tech connect. I've called and talked to the help desk and they say it's a known issue with something to do with the BCM inte...
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2009 Chevrolet Express 2500 4.8L steering pull VIN: 1GCGG25C29
Vehicle comes in for an oil change and tire rotation to my shop about 1 week ago. Perform both and go for a test drive. As I am pulling foward out of the stall the steering wheel automatically turns right two turns. As I pull out of the drive it practically st...
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2008 GMC Acadia SLE 3.6L Windshield Wipers VIN: 1GKEV13728
This vehicles wipers will work normally but every once in a while will just stop working under normal operation. They usually stop on the windshield and then will start working again. I have checked all connections, tried tapping on the wiper motor, etc. Is th...
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2008 Pontiac G5 2.2L MIL Lamp on VIN: 1G2AL18F28
This car came in because the mil was on and the downstream 02 sensor harness on the vehicle side had been ripped off because it was hanging. The car had multiple codes. I repaired the harness and checked the 02 sensors circuits and they are operating as design... Trouble codes: P0172 (Fuel system rich)
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2007 Saturn Vue Green Line 2.4L Mechanical VIN: 5GZCZ33ZX7
New customer ; car towed in. Cranks, no start. 12V ok, no codes. When cranking, the "starter" sounds a little fast then slow then fast again. AFAIK the 36V motor/generator does the starting. The HV gauge stays approx in the middle during cranking.
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Fixes & Summaries for GM
Fix/Summary Answers
2003 Cadillac CTS 3.2L Poor Idle Quality, Surge, MIL Lamp on VIN: 1G6DM57N53
I'm waiting for this customer to get back to us. Will start with reprogramming. Thanks to all. Trouble codes: P2176 (Min t/p not learned).
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2008 Cadillac CTS 3.6L No power VIN: 1G6DV57VX8
Thanks to you guys this is fixed with a new pump. I kind of thought it would but I was wondering about performing any additional tests before replacing it. Thanks for that replied and God Bless. Trouble codes: P0087 (Fuel rail pressure FRP too low), P0089 (Fuel pressure regulator performance).
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2008 Chevrolet Impala LS 3.5L No Start VIN: 2G1WB58K28
THANKS TO ALL THAT REPLIED, THE FLEX FUEL ALCOHOL CONTENT WAS READING 75% THIS WAS CAUSED FROM THE DIRTY MAF. RESET FUEL COMPOSITION BACK TO 1% AND ROAD TESTED AND LET SIT OVERNIGHT AND STARTS AND RUNS WITH NO ISSUES. CUSTOMER DECLINED FIXING THE EVAP SYSTEM A... Trouble codes: P0449.
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2003 GMC Sierra 3500 SLE 6.0L No Start VIN: 1GDJC34U53
Thank you everyone for your input, lots of good ideas. I wish iATN had some way of interacting with you, to let you know what progress we've made along the way. This one ended up being a challenge, but here is the story. The previous shop got the truck runnin...
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1998 Oldsmobile Cutlass 3.1L No Start VIN: 1G3NB52M9W
Hello all thanks for all the help. First had a lot of replies about the fuel trim and need to change the battery first. Battery was changed first before anything else was done, it was in repair history. Fuel trims I apologize I was to vague. When I said the in... Trouble codes: P0440, P0507, P1404.
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2005 Pontiac Grand Prix 3.8L heatre VIN: 2G2WP52235
Finally able to get back to car and started the cylinder leakage test to check for head gasket failure but customer wants the car back.Did put a used radiator in it and finally was able to get engine up to temp and cooling fans coming on at 215 but still loose...
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