Installation Procedure

Fig 1: View Of Water Pump Sprocket Bolts

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: Prior to installing the water pump, read the entire procedure. This will help avoid balance shaft chain re-timing and ensure proper sealing.

Install a NEW water pump O-ring seal.
IMPORTANT: A guide pin can be created to aid in water pump alignment. Use a M6 m x 6 mm stud. Thread the pin into the water pump sprocket.
Using the guide pin, align the pin with the water pump holding tool.
Position the water pump against the engine block and hand tighten the water pump bolts.
NOTE: Refer to Fastener Notice .
Install the inner water pump sprocket bolts. After 2 are snug, remove the guide pin and install the 3rd bolt.
Tighten: Tighten the water pump bolts to 25 N.m (18 lb ft).
Tighten the water pump sprocket bolts last.
Tighten: Tighten the water pump sprocket bolts to 10 N.m (89 lb in).

Fig 2: View Of Water Pump Holding Tool
Courtesy of GENERAL MOTORS CORP.
Remove the J 43651 . See Special Tools .

Fig 3: View Of Water Pump Access Plate At Front Cover
Courtesy of GENERAL MOTORS CORP.
Install the water pump access plate and bolts.
Tighten: Tighten the bolts to 10 N.m (89 lb in).
Install the right hand fender liner. Refer to Front Fender Liner Replacement .
Install the thermostat housing. Refer to Thermostat Housing Replacement (RPO LE5) , Thermostat Housing Replacement (RPO LSJ) or Thermostat Housing Replacement (RPO L61) .