Sierra 1500 2WD V8-5.3L VIN B HO (2006)
Water Pump: Service and Repair
Auxiliary Water Pump Replacement
Water Pump Replacement - Auxiliary
Removal Procedure
1. Drain the cooling system.
2. Reposition the front heater inlet hose clamp (4) from the auxiliary water pump (1).
3. Remove the front heater inlet hose (6) from the auxiliary water pump (1).
4. Reposition the rear heater inlet hose clamp (2) from the auxiliary water pump (1).
5. Remove the rear heater inlet hose (3) from the auxiliary water pump (1).
6. Remove the heater outlet hose from the clip.
7. Disconnect the electrical connector (1) from the auxiliary water pump (2).
