OEM GMC Sierra 3500 Classic Water Pump

GMC Sierra 3500 Classic Water Pump Parts and Q&A

• Water Pump
  12600767
  Q: How to replace the water pump on LY6, L76, and L92 engines on GMC Sierra 3500 Classic?

  A:

  Begin Water Pump (300) replacement on ly6, l76, and l92 engines by taking off the air cleaner outlet duct and draining the cooling system. Reposition and move away the hose clamp where it attaches to the coolant air bleed pipe before removing the radiator vent inlet hose. Then push the radiator inlet hose clamp off from its position on the Water Pump before taking off the inlet hose. Push the radiator hoses aside from the system and take out the accessory Drive Belt. Open the Water Pump and pull away the radiator outlet hose after loosening its hose clamp. Unclamp and disconnect the surge tank outlet hose from the Water Pump position while moving it away. Move the heater inlet hose clamp from its position on the Water Pump before removing the hose and setting it aside. Disconnect the Water Pump bolts (301) and remove the Water Pump assembly (300) with the gaskets (309) before disposal. Mount the Water Pump (300) onto the engine block using fresh gasket seals but first remove oil and foreign debris from all gasket areas. Install the Water Pump assemblies on their designated locations with new gaskets 306. Tighten the pump bolts 301 first to 15 n.m (11 lb ft) then reach the final torque of 30 n.m (22 lb ft). Connect the Water Pump heater inlet hose with its clamp while placing back the radiator surge tank outlet hose with its clamp. After you mount the radiator outlet hose and its clamp at the Water Pump, put on the accessory Drive Belt. Place radiator inlet and vent hoses in their proper position before attaching the hose to the Water Pump and fastening it with a clamp. Secure the radiator vent inlet hose to the coolant outlet fitting then clamp it. Afterward fill the cooling system and put back the air cleaner outlet duct.