Sierra 1500 2WD V8-4.8L (2007)
Thermostat: Service and Repair
Engine Coolant Thermostat Replacement (LY2, LH6, LY5, LY6, L92)
Removal Procedure
1. Remove the thermostat housing.
2. Remove the thermostat.
Installation Procedure
1. Install the thermostat.
2. Install the thermostat housing.