Sierra Classic 2500 4WD V8-6.0L (2007)
2. Install the heater core cowl gasket (1) to the HVAC module assembly (2).
3. Install the heater core cover (1) to the HVAC module assembly (2).
Notice: Refer to Fastener Notice.
4. Install the screws to the heater core cover (1).
Tighten the screws to 2 N.m (18 lb in).
5. Install the HVAC module assembly.
