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Prev Professional Automotive Repair Technical Discussions for August 28, 2013
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Open Help Requests for GM
Help Request Answers
2000 Chevrolet Astro 4.3L security VIN: 1GNDM19W9Y
help to all the tech. I have this car which is my neighbors van and he come up to me asking for some help regarding his van it does start and it will stall in less than a minute. I know I'm dealing with security system for its steady on but once I put my scann...
2003 Chevrolet Tracker LT 2.5L engine VIN: 2CNBJ634X3
The vehicle has a problem with using oil & smokes ever scince we replaced the primary timing chain & trensioner. It is getting oil in the intake manifold through the pcv valve. With the pcv valve removed from the valve cover , the problem disappears. I remove ...
2003 GMC C4500 Topkick C4E042 6.6L vss VIN: 1GDE4D1123
this truck has no codes, driving it the speedo goes to 87 and speed limiter keeps it down. vss shows 87 and acutal speed is 37. abs signal shows 37. where does it get vss from? i replaced the oss sensor on alison trans. thanks for any help. Matt
2003 GMC Yukon SLE 5.3L cruise control VIN: 1GKEK13Z43
no codes set in any module, using verus scan tool monitor TAC data for cruise. all inputs from cruise switch read normal. TCC/brake input normal, but the brake switch input to the TAC shows brake on at all times. test the light blue wire in cavity 6 connector ...
2004 GMC Yukon XL 1500 SLT 5.3L Battery VIN: 3GKEC16ZX4
Hello Techs, I have this GMC Yukon that is making me scratch my head. The owner took vehicle to Florida on trip and it started having battery light come on & message of not charging. However it also developed an engine miss on the trip which ended up being a w...
1990 Oldsmobile 98 Regency 3.8L Stall VIN: 1G3CX54C8L
car stall intermittanly in idle sometime restart sometime no start crank only. when crank only found no injector pulse fuel pressure ok have spark.replaced maf crank and cam. still same. customer repaced wires and spark plug. history code 42. no curren code. a...

Fixes & Summaries for GM
Fix/Summary Answers
2005 Cadillac DeVille 4.6L Blower motor VIN: 1G6KD54Y65
I really thank all of you for your input.The afterblow feature is on & that is what I had to explain to my customer.After I explained the function of the afterblow feature to her she was alright with it.Once again thank all of you for educating me! Bill [...]
2000 Chevrolet S10 2.2L No Start, Poor Idle Quality VIN: 1GCC51946Y
I really appreciate the great insite to my question. Those of you who supect the ckp signal as being wrong i believe are correct. When i set the engine in i marked the crank pulley on tdc compression stroke for the first 2 cylinders and used a timing light to ...
2004 Chevrolet Silverado 2500 6.0L Misfire VIN: 1GCHK23U04
Thanks everyone. The crank variation relearn did fix this vehicle. I had a little trouble getting it done with my modis because it would not tell me if it had relearned successfully but I went back to the misfire monitor and all is well."Ghost" misfire fixed a... Trouble codes: P0300.
2005 Other GM Commodore 3.8L Engine VIN: 6G1ZK84B35
Problem solved. Nathan [...] put me onto the solution. I checked the connector to the O2 sensor, and the earth for the signal wire was not earthing. I ran a new wire back to the pcm , but it was still not earthing. I called the customer and found out that the...
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