I have a 96 LSS that needs a tranny and i am needing to know how to match a used one from another car.Is there only certain years and vehicles that are compatible? Is there a list of these compatibilities anywhere?
4T60-E series. You don't have the Supercharged version, so that throws out the 4T60-E HD trans. Very common trans. You could yank one out of a Park Ave, Bonneville'* etc, but you may run into gear ratio differences. And, I'm not sure on the year range. Boosty is our tranny guru and should chime in shortly.