So I wanted to start a thread and get some personal experience from others about towing with their trucks, and wanted a bit of advice myself. I'm relatively new to my '91 C1500, and the only time I've ever had to tow something rather large was helping a friend move (which towing a loaded down car trailer filled with furniture in your 454/TH400 C10 isn't exactly fun). I wanted to see what I should kind of look for before getting ready to tow moderate loads around 5000lbs max (including trailer). I replaced the stock transmission cooler with a better fin/plate setup and bought a transmission temperature gauge to monitor temperatures as well. Brakes pads and rotors were replaced up front, brake shoes and hardware were replaced in the rear, a new prop valve was also installed (deleting the ABS in the process however), and a full ignition tune up is planned when I replace my old coolant temp sender and thermostat (195 good enough for towing?). What else should I examine/replace?