Hey guys, thanks for the replies.
Good idea to check the other key fob - just did that, and I have the same issues. I guess it's not an issue with the key fob.
If I sit in the truck, with the truck running, and hit the lock or unlock button enough times it will eventually do what I want it to do. The first few times I hit the button nothing happens. Then the next couple times it will move the desired direction, then move immediately back. Then the next couple times it will move the desired direction, then move immediately half-way back. Then after hitting the button a couple more times it will do what I want it to. This also happens sometimes with the remote from outside the vehicle. Very strange.
I've tried it with the "Anti Lockout" feature both on and off, with no difference. Seems like that feature might not be working correctly.
Also, the driver's door does not automatically lock when put in gear or automatically unlock when put into park. The other three doors do.
My next step is to remove/reload the tune. I'll let you know if that fixes the issue.
If anyone else has any ideas, I'm all ears. Thanks.