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. Finger tighten the bolts.

Caution: Refer to Fastener Caution in the Preface section.

3. Tighten the water pump 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 to 20 N·m  (15 lb ft).



6. Install the water feed tube.
7. Lubricate the feed tube O-ring with antifreeze.
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 and tighten to 10 N·m  (89 lb in).



10. Install the engine coolant temperature sensor by hand.
11. Tighten the engine coolant temperature sensor and tighten to 20 N·m  (15 lb ft).