update:
spent 9 hours at the dealership today
first from 7:30 to 9 am it took for them to say GM suggested to RF balance all 4 tires. that's what I was told they were already going to do last time (Thursday) as soon as I put enough miles on it and it took them 90 minutes to rediscover this lost knowledge of what to do next?
so now its 9 am and of course their RF balance machine is broke so they have to bring it to another dealership to have it done but now im at the back of the line at the other dealership with like 12 people ahead of me.
around 12 they tell me the truck is back and all 4 tires were "way out" as they put it and so we test drive it and it wasn't bad but still had a slight vibration so I said to go ahead and put on a new set of tires since they offered to do that.
4 hours later the test drive now has vibration at 60 mph instead of 70 so the guy says "I guess we need to RF balance them.
what the heck, you put a new set of tires and don't balance them the way GM says you need to
and this after taking 4 hours to replace 4 tires.
so now its 4:30 and too late to send it out and get it back today so I was given rental to go home and they will get it RF balanced tomorrow and if that doesn't solve it they said maybe they could try a different brand or tires on it. so far not everything they mention ends up being a real option but it does seam to be a tire issue since changing things with the tires changes the circumstances and intensity of the vibration.
@ duckman1911 - the service manager reset the door lock thing for me so that's fixed but he didn't know if he could or how to set it to auto lock itself if the key isn't in the ignition and its left unlocked