where and how do I install a thermostat on a 1996 Suburban 1500?

Simple enough job for a diy but not costly at a repair shop either!! IF you must try follow the top radiator hose until you get to the motor. With a COOL engine remove the two bolts holding the thermostat housing on remove the housing with hose, note how stat is installed and do the same with new one. Clean mating surfaces. Reverse procedure to finish the job.