Express 2500 V8-6.6L DSL Turbo (2010)
7. Remove the thermostat bolts (1) from the engine coolant outlet pipe (2).
8. Remove thermostat (1) and thermostat (2) from the engine coolant thermostat housing.
Inspection Procedure
1. Inspect the thermostats for sticking, cracks, and/or leakage of wax.
2. Replace the thermostats if damage is found.
3. Clean the thermostat housing and thermostat housing cover sealing surfaces.
Installation Procedure