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Showing results for tags 'shift problems'.
I have a 2003 Chevy 2500hd 6.6l diesel. All gears and shifting were working fine. Pulled out on highway today and had to get on it. When going through gears I heard it slip up and rev as if it slipped out of gear. I slowed down and got off road. It seemed to be stuck in 3rd gear. I tried putting it into reverse and it would not work. The shifter doesn’t even feel like it’s moving into gear when I move into reverse. When I move shifter to Drive, it sounds very rough and it starts off in 3rd gear. The truck will not shift out of this stuck gear, not even go into reverse. Had to put home slowly in that gear range. Need some help, What’s going on?
I have taken my 6.2 8 spd back to dealer three times for rough shifting and clunking between 1st and 2nd gear. first time they replaced converter, second time they replaced seals 1st &2nd, 3rd &4th and 4th & 5th. Third time they reprogrammed the computer. NOT FIXED!! They were programming the tranny to GM specks!!! I invested in a Super Chips Programmer. installed the super chip transmission suggested and guess what!! I love the way it shifts now!! It shifts smooth as a school teacher's leg!! no more rough shifts, no more clunking!! want to fix your 8 spd problems then abandon the GM program for your tranny . The 8 spd is a great transmission if programmed correctly