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Prev Professional Automotive Repair Technical Discussions for April 16, 2011
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(Also Available: All, Asian, Chrysler, European, Ford, GM.)
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Open Help Requests for GM
Help Request Answers
1978 Chevrolet Corvette Silver Anniversary Edition 5.7L AC control head
After having repaired the vacuum AC control switch (fastener missing from the center of vacuum switch holding it together)i had to correct the vacuum lines to the switch. I found the source vacuum line broken at firewall and lost in the firewall (located it wi...
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1991 Chevrolet Caprice 5.0L Horn VIN: 1G1BL83EMW
Does any know where the horn relay might be in this car.is it part of the srs module?it is not in the fuse box.
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2000 Chevrolet Blazer Trailblazer 4.3L compressor VIN: 1GNCS13W5Y
the ac compressor is rattling bad at idel 80 degress outside low side is at 28 psi hi side is at 150 not geting cold at all bring rpm up to 2,ooo presures drop and compressor shuts off checked inside temperture adjustment and blend door seams to be working i w...
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2001 Chevrolet Tracker LT 2.5L MIL Lamp on VIN: 2CNBJ73491
Hello thanks for taking the time to help. I may need factory wiring diagram and fuse details. I have all data here and what I have looked at is the o2 heater relay. I have no power on pin 1 the blu/wht wire. I have power on pin 3 blk/wht wire. I have wiring di... Trouble codes: P0135 (o2 heater), P0141 (o2 heater), P0155 (o2 heater), P0135 (o2 heater)
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2002 Chevrolet Silverado 2500 6.0L Spider gears
I have a spider kit set from Motive. Customer bought. I have the carrier removed, and the center pin out, I have never seen one of these, but it looks to me like I have to drive out the pins in order to remove the "lock?" before I can remove the spider and sid...
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2006 Chevrolet Cobalt LS 2.2L Accessories VIN: 1G1AJ55F86
This is just a plain old car,when you turn the key on the trunk opens and the brake lights,reverse light come on till you turn the key off.i'm at home and for the service code therre not many,there audio code can't remember the other 2.there is voltage on brak...
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2004 GMC Sierra 2500 HD 6.6L Oil pressure gauge VIN: 1GTHK23274
Hello all. I got a problem with this oil pressure gauge not working. I got 5v ref.(gray wire) to oil pressure switch and .4v @ idle at connector C107, pin D6 (tan/wht signal wire)and up to 2.6v @ 2500 rpms, are this good values to determine a good oil pressur...
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Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Cavalier 2.2L no crank, no dash lights VIN: 1G1JC5243X
Thanks for all the requests . Todd from michigan had it nailed. also dave form new york lead me in the direction. I had a voltage drop in between the fuse and the ignition switch. i traced it down to a bulk head right before entering the inside of the car. t...
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2002 Chevrolet Impala 3.8L races VIN: 2G1WH55K72
Thanks to all who replied. Decided to try another PCM and seems okay. Customer had it back for a week now and no complaints. Thanks again.
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2002 Saturn Vue 3.0L 2-3 shift VIN: 5GZCZ63B02
Whoops!!! The tech that was working on this vehicle thought that it was similar to the Honda. He thought that he could fill it with the handy plug on the top of the trans. not knowing that it was the 3rd band anchor. We accessed the band in the vehicle and re...
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