Silverado 3500 4WD V8-6.0L VIN U (2004)
2. Install the heater core cover.
NOTE: Refer to Fastener Notice in Service Precautions.
3. Install heater core cover screws.
Tighten
Tighten the screws to 1.6 N.m (14 lb in).
4. Install the heater/vent module.
