Hi all recently had a issue with my 03 gmc envoy xl (4.2) tranny was waiting to turn left off the highway and to my surprise I had no drive what so ever in any gear . It is not the linkage (reverse light comes on) so I towed it to a tranny shop and they said the tranny is shot (clutch plates welded together) 2400$ to repair without a teardown analysis. I had indications that maybe the tranny was slipping (would rev before going into gear) any thoughts on this...thanks Hommer