1993 Chevy Truck Transmission wont shift from second

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Transmission problem
1993 Chevy Truck V8 Four Wheel Drive Automatic 181000 miles

My truck is lifted and has some modifications including a jet chip but can run great all day and then sometimes not at all. Sometimes my truck will stay in second gear after driving or just jump the rpm up on the highway because it will jump into second gear. When this happens the Ebrake light comes on and the rpms go high obviously because it went in second gear. Now I can pull over and turn it off for a little while and it will start up and run fine or do it over again. I have played with the jet chip to see if its the cause and it doesnt matter if its in or not. I have let the computer reset by diconnecting the battery. When the truck jumps into this gear it makes the speedometer go up and down really fast and sometimes it will catch and go the right speed. My transmission fluid is pink and the truck shifts good at normal running times. I can shift the gears through 1st-OD and it wont shift it always stays in second gear. ?

Do you
have the same problem?
Wednesday, February 6th, 2008 AT 7:40 PM

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