When my tranny is hot and I get off the freeway to eat at a burger joint I get weird problems. I shut the truck off at the drive thru so they can hear me order. When I start back up and put it in D the truck slams into gear.

Sometimes when its hot and I pull into a parking spot and shut it off it learches forward a bit like its still in gear while shutting down.

It only does this when hot.

Its done this for a while now and I wondered if I need to have it looked at while I still have a warranty?

Any ideas?

Could be the nsbu. dave

I doubt it's the NSBU.

Sounds like a leaking seal (possibly the C5 clutch) or a sticking valve. Do you have any 2-1 shift problems when it's hot?