Water Pump Installation

Prior to installing the water pump, read the entire procedure. Pay special attention to avoid part damage and to ensure proper sealing.

Fig 1: View Of Water Pump Assembly
Courtesy of GENERAL MOTORS CORP.
1. Install the water pump assembly.
2. Install the water pump bolts. Finger tighten the bolts.
NOTE: Refer to Fastener Notice in Cautions and Notices.
3. Tighten the water pump bolts.

   Tighten:  Tighten the bolts to 25 N.m (18 lb ft).

4. Apply sealant P/N 12378521 (Canadian P/N 88901148) to the water pump drain plug.
5. Install the water pump drain plug, if necessary.

   Tighten:  Tighten the water pump drain plug to 20 N.m (15 lb ft).

Fig 2: Lubricating Feed Tube O-Ring With Anti-Freeze
Courtesy of GENERAL MOTORS CORP.
6. Install the water feed tube.
7. Lubricate the feed tube O-ring with anti-freeze.
8. Install the water feed tube by twisting and pushing toward the water pump. Take care not to tear or damage the O-ring.
9. Install the thermostat housing to block bolts.

   Tighten:  Tighten the bolts to 10 N.m (89 lb in).

10. Install the thermostat.
11. Install the thermostat housing cap and bolts.