no reverse

[SHMOKIN]

don't drive my truck much but, when I drove it last, lost reverse.
sometimes truck won't go forward either.
checked tranny fluid...it's OK.
checked to see if any fuses were blown.....OK
now I'm just scratching my head:?

 

[lightning666]

sounds like to me the tranny isnt buildng enough pressure. reverse takes the most main line pressure in a tranny bc it has less clutch packs. have you pulled any codes?

 

[thePUNISHER]

actually reverse has the most clutch plates in whole trans.

does the o/d light flash? any codes?

 

[SHMOKIN]

no flash and no codes.....

had the trans taken out and the rubber washer was melted between drum and bearing plate.
drum was scored and clutches melted to a gooey mess
replaced clutch plates with blue plates (heavy duty)
shifts a little harder 1st to 2nd but works great
at least I can back out of the garage to drive now