I would expect any competent shop to be able to work on the transmission, though I would look for a shop with a tech with gray hair and maybe avoid the ones that only have kids born after most these trucks were parked the first time.

Part of your problem may be the little shifter box on the column just the other side of the firewall from the dash. If it is allowing both levers to move at the same time it may be trying to shift into two gears at once.

Since the bushings helped for a while I'd chase possible shifter issues before assuming the problem is internal to the trans.


1955 1st GMC Suburban | 1954 GMC 250 trailer puller project | 1954 GMC 250 Hydra-Matic | 1954 Chevy 3100 . 1947 Chevy COE | and more...
It's true. I really don't do anything but browse the Internet looking for trouble...