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[IVREDNECK96]

OK so my son calls me this morning,Tells that his truck will not move in reverse.He has all forward gears, transmission fluids not burnt and is full. Where do start lookiing any help would be awesome

 

[Transman304]

Sounds like the famous broken reverse band. You could drop the pan and see if the lug has made it down that far. Also remove rear servo cover and servo piston and see if you can apply the band through the pin hole with a screwdriver to verify. Other than that it will have to come out and be disassembled.View attachment 22286