5.7L/6.1L Engine
| 1 - THERMOSTAT HOUSING |
| 2 - THERMOSTAT |
| 3 - BOLT |
- Disconnect negative battery cable at battery.
- Drain cooling system. See Cooling - Standard Procedure .
- Remove radiator hose at thermostat housing (1).NOTE: Thermostat o-ring is part of thermostat (2) and is not serviced separately.
- Remove thermostat housing mounting bolts (3), thermostat housing (1) and thermostat (2).