New tow rig....

[dinfusino]

IS IT A 6 SPEED ?

All '07+ Denalis are 6-speeds matched to the 6.2 Lt.

[chpthril]

my wife escalade with 6.0 sucks at pulling up steep ramps, because it doesnt have 4 low like my 2500hd truck

It's all about gearing, what rear end ratio does it have? Anything less then a 3.73 is a wast for pulling

[brody66]

I had a 07 denali on the lot a few months ago, i cannot believe how much power it had, i think it would have beat my duramax and the ride could not be beat, never got the chance to pull anything with it but i got 18.5 mpg going 75 and 22 taking her slow at 60, it is a great truck and you will have no problem pulling your boat.