Before anyone says google, I have.
I'd rather get an answer before having to roll the truck up on ramps / jacks.

This is for an 08/09. The 07s & earlier were no brainers. The manual also doesn't mention anything about flushing.

Is there a petcock location or do I need to remove the skid plate to access the coolant hose? Any easier way?

Edit:
Nevermind! Found it. I think I'll post a small walkthrough like other people have done when I get finished with it.

 

let me know how you burped it, was wondering if the coolant res cap worked like radiator cap leaving it off letting truck run till hot and coolant starts to flow and seeing bubbles come out etc

 

This'll be my first time changing coolant, so it'll be a trial by fire.
I've seen a few tutorials on getting all of the air out. Hopefully, I can do it right the first time.

I guess you have an 08 or 09? The previous iterations a heck of a lot easier, from the looks of it.

 

I have 2003, just not familiar with doing this with no radiator cap

 

When I get around to knocking this out, I'll do a tutorial for it. Hopefully, it'll save everyone some time & frustration.