Coolant Booster Pump Replacement Ambulance Body

1. Drain the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.

Caution: Refer to Vehicle Lifting Caution in the Preface section.

2. Raise the vehicle. Refer to Lifting and Jacking the Vehicle in General Information in the 2005 C/K Truck Service Manual.
3. Loosen the hose clamps (1) from the coolant booster pump inlet and outlet.



4. Disconnect the coolant booster pump wiring.
5. Remove the coolant booster pump/shield retaining bolts (1).
6. Remove the coolant booster pump and shield.

1. Install the coolant booster pump and shield.

Notice: Refer to Fastener Notice in the Preface section.

2. Install the coolant booster pump retaining/shield bolts (1).

Tighten
Tighten the bolts to 9 N·m (80 lb in).




3. Connect the coolant booster pump wiring.
4. Reposition and tighten the hose clamps (1) to the heater water booster pump inlet and outlet.
5. Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information in the 2005 C/K Truck Service Manual.
6. Fill the engine coolant. Refer to Cooling System Draining and Filling in Engine Cooling.