Silverado 3500 4WD V8-6.6L DSL Turbo VIN 2 (2004)
33. Remove the thermostat housing bolts and nuts.
34. Remove the thermostat housing, with the bypass pipe.
35. Remove and discard the thermostat bypass pipe to water pump O-ring seal.
36. Remove and discard the thermostat housing gaskets.
37. If necessary, perform the following steps:
1. Remove the thermostat bypass pipe from the thermostat housing.
2. Remove and discard the thermostat bypass pipe O-ring seal.
3. Remove the thermostat cover bolts and cover.
4. Remove the thermostats.
5. Remove and discard the thermostat seals.
38. If required, clean and inspect the thermostat housing.
Installation Procedure
1. If necessary, perform the following steps:
1. Install NEW seals to the thermostats.
