Towing with a Chevy Avalanche 1500 4x2 - Need some advice

I pulled a 23' 5k+ TT for 4 years with an 05 AV 1500 4X4 over the Rockies many times without a problem. Revs got a litlle high on the longest steepest grades but never had to stop. Used synthetic oil and installed a trans cooler (some year AVsdidn't come with them even with tow package). Just keep your vehicle in good condition and you should be OK.