Changing anti-freeze in a Dura-Max

[Steve-Maine]

I have a 2006 GMC 2500HD with a Dura-Max engine. Any special trick in changing anti-freeze?? Thanks

[born-to-fish-]

There's no draincock in the radiator, you'll have to pull the lower rad hose(messy)

There's also a plug on the top of the engine at the front for "burping" the air out.

Be sure you stick with the "long life" coolant , as the old "green stuff" isn't compatible with the pink long life stuff (dexcool)