Silverado SS AWD V8-6.0L VIN N (2003)
1. Install the heater/vent module assembly to the vehicle.
2. Install the heater/vent module mounting nuts.
NOTE: Refer to Fastener Notice in Service Precautions.
Tighten
Tighten the nuts to 9 N.m (80 lb in).
3. Install the heater/vent module mounting screws.
Tighten
Tighten the screws to 4 N.m (35 lb in).
4. Connect the electrical harnesses and the ground connections.
5. Install the heater/vent module drain hose.
6. Install the I/P carrier.
7. Install the outlet heater hose to the heater core.
8. Reposition the outlet heater hose clamp to the heater core.
9. Install the inlet heater hose to the heater core.
10. Reposition the inlet heater hose clamp to the heater core.
11. Fill the engine coolant.
