I saw this referenced in another post. Seems it is a common problem in GM
transmissions. One of the posts I found quoted a TSB that gave a build
date in 1999 where the valve body was revised. My S-10 us a 2000 and it
sometimes shifts rough from 1st to second, I thought it was just due to the
under powered 2.2 as my old 2.5 manual I had to wind out pretty far is
first before hitting second anyway. Can I tell if my transmission had the
new valve body or the old style? I think I saw somewhere (door sticker
maybe) my truck was build in nov 1999 so I'm real close to the change time.
If mine is the old style can I fix it easily myself? Can I carry a spare
and swap in if it breaks sometime on the road ( I drive a lot and can't
afford downtime so I do all my own work and carry a full size spare, spare
fluids and filters, spare fan belt, spark plugs and wires, spare lights and
fuses as well as a toolkit).