I've got an 01 4 WD 4.3L. Blazer auto. Does anyone know what I can tow with it?

 

A quick Google said you could handle about 5000. I would go under that to have some wiggle room.

 

also keep an eye out for the size of the trailer. larger trailers require and usually will have trailer brakes which most likely will require you to install a brake controller in the blazer. If you have a tow package in your blazer the wiring will already be in place, but if you do not then you will have to run the wiring for a brake controller. Lighter trailers may or may not have brakes. But you should check with your states highway traffic laws for weight restrictions, i.e. how heavy of a trailer can you tow without brakes, just because the trailer doesnt have brakes on it doesnt mean its legal.