I am setting my Sonoma up to tow my Jeep on a trailer. I am not towing with it more then two to three times a year. Most of the time Ill drive my Jeep were I am plain to take it.
I have done a ton of reading on towing in the past month on S/T trucks and the Best thing to do to keep them alive its a bigger trans cooler, oils cooler and helper springs or add a leafs in the rear Also a Class 5 hitch.
Driving wise Keep it out of Over drive, No cruse control and Keep it under 70.
For the trialer make sure it has brakes and and that the whole load is under 5000 lbs thats what the most a S/T truck can handle.