got a oil change at the dealer and now the truck is running awful. No power at the beginning and jerks a lot when it hits overdrive. What did the dealership do?

 

Hmm. That's a tough one. I'm sure they used the right parts but you may want to check what oil they put in it. Fresh 15-40 and maybe cold temps where you are. Did they do fuel filters also? Possible air leak there. Maybe disturbed a wire harness or left something unplugged. Maybe leaned on a brittle map hose and now it's leaking. A scan might help figure it out, maybe if you tell them what's happened they'll check it for you.