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Courtesy of GENERAL MOTORS CORP. 1. Remove the air cleaner outlet duct. Refer to Air Cleaner Outlet Resonator Replacement . 2. Remove the drive belt. Refer to Drive Belt Replacement . 3. Drain the cooling system. Refer to Cooling System Draining and Filling (Vac-N-Fill) or Cooling System Draining and Filling (Static Fill). 4. Reposition the radiator outlet hose clamps at the surge tank and water pump. 5. Remove the radiator outlet hose from the surge tank. 6. Remove the radiator outlet hose from the water pump. Fig. 186: View Of Water Pump Inlet Hose & Clamps
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
7. Reposition the water pump inlet hose clamps. 8. Remove the water pump inlet hose. Fig. 187: View Of Fan, Water Pump Pulley & Bolts 9. Using J 41240 , hold the water pump pulley, remove the water pump pulley bolts.
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 188: View Of Water Pump & Bolts 10. Remove the water pump bolts. 11. Remove the water pump. 12. Remove and discard the water pump gaskets. 13. Clean and inspect the water pump, if necessary. Refer to Water Pump Cleaning and Inspection . Installation Procedure
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
Fig. 189: View Of Water Pump & Bolts 1. If reusing the old fasteners, apply sealant GM P/N 12346004, (Canadian P/N 10953480), or equivalent to the threads of the water pump bolts. 2. Install NEW water pump gaskets and the water pump. 3. Install the water pump bolts. Tighten: Tighten the bolts to 45 N.m (33 lb ft). NOTE: Refer to Fastener Notice .
2008 Chevrolet Silverado 1500 2008 ENGINE Engine Cooling - Cab & Chassis Sierra, Cab & Chassis Silverado, Sierra & Silverado
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