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Prev Professional Automotive Repair Technical Discussions for June 25, 2011
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Open Help Requests for GM
Help Request Answers
2000 Chevrolet Tahoe 5.3L battery light VIN: 1GNEK13T9Y
This vehicle came into my shop with a new alternator, battery light comes on and off while driving. We tried another alternator, a different instrument cluster, and a different PCM. Went through all test, could not find a problem. Connected a scope to the grey...
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Fixes & Summaries for GM
Fix/Summary Answers
1995 Chevrolet C3500 7.4L Upshift/Output Speed VIN: IGDGC34N9S
Ok so this morning i ordered a computer from napa put it in and all symptoms are gone. So that was the fix for this ghost car. Happy i fixed it and customer is also happy.
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2006 Chevrolet Express 3500 4.8L R.H. Wheel speed sensor circuit VIN: 1GCHG39V56
I tested both front wheel speed sensor circuits again. Both gave the same resistance readings and lab scope waveforms at the EBCM. I called Identifix for further help. I checked the bias voltage on each WSS circuit. Both were at 3.275 volts. I produced another...
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1994 Pontiac Firebird 3.4L Cooling Systems VIN: 2G2FS22S6R
Car is fine cooling fan cycles at 225-212. gauge is wrong and cap was bad. checked good first time i checked it bad the next. ecm and thermo gun consistent with each other. temp gauge in the red it needs a resistor in line. don't know why but does. all four t...
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1997 Pontiac Sunfire SE 2.2L theft system VIN: 4G2JB3249V
Gentlemen I want to say thanks for the replies to my no start. the problem I have is it now starts everytime so we have no way to trace the no spark problem when it does not start. I mentioned in my post that we were thinking about the theft system which inc...
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2007 Pontiac G6 GT 3.5L no crank VIN: 1G2ZH57N77
Hey Guys, well it looks like the starter was bad afterall, to play it safe, we also changed the crank relay. Many, many thanks to all. Just one more question... Are we having fun yet ? Are we almost there. God Bless one and all, Bob C
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