4l60e stuck in first until manually shifted to 2md

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Fletch_71

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So I just got a 1993 gmc sle k1500 and the transmission won't shift in into anything else but 1st in d or od, but will manually shift into 2nd. After that it doesn't shift into 3rd or 4th. What do you think transmission gurus?
 

thunderstruck

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No power to the transmission... check for blown fuses, bad wiring, ignition switch...
 

Supercharged111

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No power to the transmission... check for blown fuses, bad wiring, ignition switch...

Were that the case, he'd be stuck in 3rd. The 2nd position is something the truck is programmed to do. OP try starting in 2nd. I bet the truck will do it.
 

Fletch_71

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Were that the case, he'd be stuck in 3rd. The 2nd position is something the truck is programmed to do. OP try starting in 2nd. I bet the truck will do it.
it doesn't go into limp mode at all. It will just shift for like maybe 5 minutes first to second and then it acts like it goes into nuteral for 3rd, then all of a sudden it shifts into first when I start moving slow enoigh and will not come out of 1st unless manually put into 2nd and that all she gives me.
 
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