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International Automotive Technicians Network
Prev Professional Automotive Repair Technical Discussions for October 8, 2006
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Open Help Requests for GM
Help Request Answers
1991 Chevrolet K1500 Cheyenne 4.3L TRANy-Tcase VIN: 1GCEK14Z8M
The vehicle makes a grinding noise and has a related vibration only while backing up and in 4 wheel drive. 2wd is fine and all foward operation is fine. Low or high 4wd makes no difference. The customer lives 100 miles from a town, making it difficult to tell...
1994 Chevrolet Blazer 6.5L neutral,reverse VIN: 1GNEK18S4R
Hi everyone, This is my first post. We have in the shop this 94 Chevy Blazer 6.5 turbo-diesel (4l80E) with no neutral and no reverse. Neutral is forward gear and Reverse just revs up. Logic would tell me that forward clutch is not releasing, but I admit my li...
1997 Oldsmobile Aurora 4.0L AC system VIN: 1G3GR62C5V
had car in for A/C non op. Found compressor bad, replaced everything, car was gone for a few months now back with A/C warm. Found no leaks but found orphice tube full again,replaced tube again. A/C only getys down to 39. High side goes to 150 and low side cycl...

Fixes & Summaries for GM
Fix/Summary Answers
1999 Chevrolet Cavalier 2.2L Fluid Contamination
Hi guys thanks for all the replies but i am well aware of the radiator problems with the trans cooler in it..i was more looking to see if anybody has run into anything wierd that could cause fluid to look milky (like maybe cavitation of pump or some other way ...
1996 Oldsmobile Cutlass Supreme SL 3.1L MIL Lamp on VIN: 1G3WH52M3T
thanks for all the replies. most everyone hit the nail on the head. removed throttle body and found egr passage partly clogged in upper intake. picked carbon out and cleaned with frayed speedo cable in electric drill. problem cured. i can't believe i overlooke... Trouble codes: P0401 (insufficient egr flow).
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