Installation Procedure

Important:  When servicing the water pump assembly, do not apply any sealant to the water pump gasket. The water pump gasket is manufactured with the proper amount of sealant printed on it.

1. Install the water pump gasket.
   Fig 1: Installing Water Pump Gasket

   Courtesy of GENERAL MOTORS CORP.
2. Apply a bead of anerobic sealer GM P/N 1052942 or the equivalent to the water pump plate.
3. Install the water pump to the backing plate.
4. Apply high temperature thread adhesive GM P/N 12345493 or equivalent, to the bolt threads.
   CAUTION: Use the correct fastener in the correct location. Replacement fasteners must be the correct part number for that application. Fasteners requiring replacement or fasteners requiring the use of thread locking compound or sealant are identified in the service procedure. Do not use paints, lubricants, or corrosion inhibitors on fasteners or fastener joint surfaces unless specified. These coatings affect fastener torque and joint clamping force and may damage the fastener. Use the correct tightening sequence and specifications when installing fasteners in order to avoid damage to parts and systems.
5. Install the mounting bolts behind the water pump plate.

   Tighten 

   Tighten the water pump plate bolts to 28 N.m (20 ft lbs).

   Fig 2: Applying Anerobic Sealer To Water Pump Plate

   Courtesy of GENERAL MOTORS CORP.
6. Install the water pump and backing plate to the engine.

   The sealer must be wet to the touch when installing the plate.

7. Apply Teflon Pipe Sealant GM P/N 123456004 or equivalent to the thread of the bolts and the studs.
8. Install the bolts and the studs.

   Tighten 

   • Tighten the water pump to the front cover bolts to 42 N.m (32 ft lbs).
   • Tighten the water pump plate to the front cover to 28 N.m (20 ft lbs).
   Fig 3: Installing Bolts & Studs

   Courtesy of GENERAL MOTORS CORP.
9. Connect the by-pass hose to the water pump.
10. Install the engine lift bracket to the engine block. Refer to ENGINE LIFT BRACKETS .
11. Install the generator mounting bracket to the engine block.
    Fig 4: Connecting By-Pass Hose

    Courtesy of GENERAL MOTORS CORP.
12. Connect the radiator outlet hose to the water pump.
    Fig 5: Connecting Radiator Outlet Hose To Water Pump

    Courtesy of GENERAL MOTORS CORP.
13. Install the water pump pulley to the water pump.
14. Install the water pump pulley mounting bolts.

    Tighten 

    Tighten the water pump pulley mounting bolts to 25 N.m (18 ft lbs).

15. Install the drive belt on the vehicle. Refer to DRIVE BELT .
16. Install the fan clutch to the water pump pulley. Refer to Fan Clutch Replacement .
17. Install upper radiator shroud on the radiator. Refer to Fan Shroud Replacement .
18. Install the surge tank in the vehicle. Refer to Surge Tank Replacement .
19. Connect the both battery negative cables to the batteries.
    Fig 6: Installing Water Pump Pulley

    Courtesy of GENERAL MOTORS CORP.
20. Refill the engine cooling system. Refer to Draining and Filling Cooling System .
21. Using the following procedures, bleed the air from the engine cooling system.
    1. Remove the cap from the surge tank.
    2. Remove the bleed screw (slotted) from the top of the thermostat housing.
    3. Pour coolant into the surge tank, and watch for coolant flowing from the bleed screw.
    4. When a constant flow of coolant is reached, closed the bleed screw at the top of the thermostat housing.
    5. Continue to fill the surge tank to the proper level.
    6. Install the cap on the surge tank.
22. Install the air intake duct to the turbocharger.
23. Install the air cleaner assembly in the vehicle. Refer to AIR CLEANER ASSEMBLY .
24. Inspect the system for coolant leaks.
    Fig 7: Installing Air Intake Duct

    Courtesy of GENERAL MOTORS CORP.