OEM 2007 Chevrolet Silverado 1500 Water Pump

2007 Chevrolet Silverado 1500 Water Pump Parts and Q&A

• Q: How to replace the water pump on LH6, LY2, LY5, and LMG engines on 2007 Chevrolet Silverado 1500?

  A: When replacing the Water Pump (300) for lh6 ly2 ly5 and lmg engines you must first detach the air cleaner outlet duct and drain the cooling system. Reposition and unclamp the hose locking on the radiator vent inlet line at the coolant air bleed pipe connection point. You should move the clamp on the radiator inlet hose to expose it for hose removal from the Water Pump. Take the radiator inlets to the side before removing the accessory belt. Take off the radiator outlet hose from its Water Pump position and reposition the hose clamp. Adjust the clamp for the radiator surge tank outlet hose and disconnect the hose for service. Reverse the same steps after these areas are serviced. Shift the heater inlet hose clamp plus pull off the heater inlet hose until you can move it aside. Take off the Water Pump bolts (301) to extract the Water Pump (300) with its gaskets (309) and dispose of the gaskets. Before adding the new Water Pump install the device on only clean gasket surfaces. Fit the brand-new Water Pump assembly with the gaskets onto the engine block's surface and fasten the bolts (301) starting from a torque of 15 n.m (11 lb ft) and ending at 30 n.m (22 lb ft). Place back the heater inlet hose together with its clamp before reconnecting the radiator surge tank outlet hose and its clamp. Install the radiator outlet hose with its clamp followed by the accessory Drive Belt. Connect the hoses to their appropriate places according to their right positions, fix the radiator inlet hose to the Water Pump, and clamp it down. Join the radiator vent hose to the coolant air bleed pipe fitting by fitting the clamp on top. After filling the cooling system you need to put the air cleaner outlet duct back in place.