Where is the thermostat located on a 96 grand Cherokee limited V8?

The thermostat on a 1996 Jeep Grand Cherokee Limited V8 is located on the engine, at the bottom of the engine's water pump housing. You'll likely need to get under the vehicle to access it. It's usually a relatively straightforward replacement but keep in mind you'll be working with hot coolant if the engine is even slightly warm. Always allow the engine to cool completely before attempting any repairs.