Yukon XL 2500 2WD V8-8.1L VIN G (2004)
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Thermostat Housing: Service and Repair
Thermostat Replacement (8.1 L Engine)
Removal Procedure
1. Drain the cooling system.
2. Reposition the inlet hose clamp at the water outlet.
3. Remove the inlet hose from the water outlet.
4. Remove the water outlet bolts (2).
5. Remove the water outlet (1).
6. Remove the thermostat (3).
Installation Procedure
1. Install the thermostat (3).