I've got an '88 K5 with 106k miles, 4x4 with the 700R4 transmission. I've got a hard shift into 2nd, and a nasty clunk into reverse (and its takes a while for it to clunk into reverse.) Transmission fluid looks fine (not burnt) and I've changed the rear diff lube.
The symptoms improve (but are still noticeable) as the truck reaches operating temperature. What do I check/do next? I'm afraid these clunks and bumps are going to destroy the transmission and the rear diff.
I tried this, and holy crap the shifting went south! It took forever for it to shift to second and it freaking slammed!
So I must have a wrong combination of transmission, TV cable, or throttle body assembly that the TV cable connects to???
I put the adjustment back where it was for now.
Hard to say, on a vehicle that old pretty much anything goes. It's possible someone along the way Frankensteined that setup. Or, maybe there's a problem with the mechanism inside the trans that the cable operates.
I revisited the instructions, I'm getting much smoother shifts. It still shifts a bit hard into 2nd while cold. I'm going to to review the transmission FAQ and determine if replacing the transmission fluid filter is a good ideal. I want this thing to last as long as possible, I can live with a 'plunk' into 2nd.