I picked up a new, to me, 07' Sierra Denali AWD last week. I bought this to replace my V10 F250 and 330ci. My velocity 260 is pretty light and shouldn't be an issue to haul around with the half ton vs. 3/4

So far I've outfitted the truck with a set of airlift helper bags in the rear, towing mirrors off of a 2500HD, and Hellwig rear sway bar. Holding off on a transmission cooler until i see how the fluid temperture actually does while towing. Considering an electric over hydraulic conversion for my trailer, and I should mention I'm using a weight distributing hitch as well.

Is there anything else recommended that would make towing easier, more comfortable, or more safe?

I would not think you should have any problems, I tow my VR1 with my Silverado SS with no problem at all.

You will be fine, of the issues you addressed only one taht maybe necessary is the air bags, but I doubt it, I tow my 303 Formula and my 05 sierra hardly squats at all, just depends on if your trailer is set up properly

No stock transmission cooler?

You should be fine with that setup.

thats what i was thinking . i have an 07 sierra vortech max , it has the trans cooler in it .same power setup as a denali i think ... 6.0 and 4l70 trans

07-current denali is a 6.2l, max pack is the 6.0 you got,

even better .

yea i took a 1500 Denali for a weekend, man it was a nice truck, plenty of power especially for pulling a 260

Thanks guys. I just want to have a comfortable and trouble free towing setup.

I tow my 28 AT with a crew cab 1500 with no problems at all on a triple axle with brakes on all 3 axles. If you have a towing package I think the tranny cooler is standard.