For 1990-2009 cars

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

1. Install the water pump assembly.
2. Install the water pump bolts.

Notice: Refer to Fastener Notice in the Preface section.

3. Tighten the water pump bolts.

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

4. Apply sealant GM P/N 12346004 (Canadian P/N 10953480) or equivalent 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).

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 and stud.

Tighten
Tighten the bolts and stud to 10 N·m (89 lb in).

10. Install the engine coolant temperature sensor by hand.
11. Tighten the engine coolant temperature sensor.

Tighten
Tighten the engine coolant temperature sensor to 20 N·m (15 lb ft).