location of a transmission control module for a 1999gmc pickup
got 2 trans put in truck same thing no 3&4 gears so had one rebuilt same thing put new
3 4 clutch pack new 3&4 shift s. new valve body same thing no 3&4 gears so i pulled it
out again when put back in it will be the 5th time also a new down shift s.
The engine and tranny are controlled by the PCM under the hood on the drivers side.
What did it end up Being wrong with trans
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