I have a '92 2wd 3/4 ton w/ 4l80 trans. It won't shift from 1st to 2nd unless you wind it out, then back off the throttle to nothing. I'm thinking stuck solenoid or valvebody problems. Trans shop says rebuild it, that it needs it since its' got 150,000 miles. Only problem is, they don't rebuild them, only swap them out. I can swap it out myself if I could find a suitable replacement. Anyone had good experience w/ some of the online shops? Thanks, kyle

try netgearhead.com, the site has forums & i bet you could get your question answered. it's strictly a transsmission site.