Silverado Classic 1500 4WD V8-5.3L Hybrid (2007)
Thermostat Housing: Service and Repair
Thermal Bypass Hose Replacement (5.3L Engine w/RPO HP2)
Removal Procedure
1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Drain the cooling system and engine block. Refer to Draining and Filling Cooling System (Static Fill) Draining and Filling Cooling System
(w/RPO HP2) Draining and Filling Cooling System (Vac-N-Fill).
3. If necessary, disconnect the crankshaft position (CKP) sensor electrical connector.
4. Remove the thermal bypass hose bolt.
5. Reposition the thermal bypass hose clamp.
6. Remove the thermal bypass hose from the fitting.
Installation Procedure
Important: Check that the coolant hose sealing surfaces are clean and not damaged. Confirm that the hose clamp retention is adequate and the
coolant hose is not deformed. Damaged components must be replaced to avoid coolant leaks.
