How do you change the thermostat in a suzuki grand vitara 2001?

To change the thermostat in a 2001 Suzuki Grand Vitara, first ensure the engine is cool and disconnect the negative battery cable. Drain the coolant from the radiator, then remove the hoses connected to the thermostat housing. Unbolt the housing, take out the old thermostat, and clean the mounting surface before installing the new thermostat and reassembling the components. Finally, refill the coolant, bleed the system of air, and reconnect the battery.