Removal Procedure
- Partially drain the cooling system. Refer to COOLING SYSTEM DRAINING AND FILLING (LY7 GE 47716 FILL) or COOLING SYSTEM DRAINING AND FILLING (LY7 STATIC FILL) .
- Remove the heater inlet and outlet pipes. Refer to HEATER INLET PIPE REPLACEMENT and HEATER OUTLET PIPE REPLACEMENT .
- Remove the thermostat housing bolts (1).
- Remove the housing.
- Remove the thermostat (3) and discard the thermostat seal (4).