Sierra 3500 4WD V8-6.0L (2008)
Engine Block Heater: Service and Repair
Coolant Heater Replacement (L76, L92)
Coolant Heater Replacement (L76, L92) (6.0L and 6.2L)
Removal Procedure
1. Drain the cooling system/engine block. Refer to Cooling System Draining and Filling (Vac-N-Fill) (See: Cooling System/Service and Repair
)Cooling System Draining and Filling (Static Fill) (See: Cooling System/Service and Repair) .
2. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
3. Remove the oil pan skid plate bolts and plate, if equipped.
4. For vehicles with regular production option (RPO) L76 (6.0L), perform the following steps. Otherwise, proceed to step 9.
5. Remove the oil cooler hose bracket bolt (1), if equipped.
6. Remove the oil cooler hose adapter bolts (2), if equipped.
7. Remove and discard the oil cooler hose adapter gasket, if equipped.
