Go to a GOOD tranny shop, and ask. Must have a parts counter, and should be the place that GM farms their tranny work out to.
Dorian
My tech/links page: <a target="_blank" href=http://www.dorianyeager.com/index2.html>http://www.dorianyeager.com/index2.html</a>
No anti-theft measures on your truck? No pity when its stolen