the tow rating for your Tahoe, will be in the towing section of your owner's manual.
since i have an '07 Avalanche, based on the same GM900 chassis, since you don't have the HD tow package(due to the 3.42 rear end ratio), i'm guessing its towing capacity is around 6500lbs.
you didn't mention if it has the 4 spd. trans or 6 spd. trans.
if it has the 6 spd trans, it'll have a higher towing capacity.
if it has the 4 spd trans, it'll have a lower towing capacity.
funny thing is that Trailer Life's towing guide for 2008, doesn't show a 3.42 rear end ratio for a 2WD Tahoe with the 5.3 v-8.
and the numbers stamped on the hitch receiver are the ratings for the receiver only and NOT necessarily what your vehicle is capable of.
GM uses the same receiver on a variety of vehicles, all with different towing capacities.
