Sierra 3500 2WD V8-6.0L VIN U (2004)
1. Install the mode actuator as an assembly with the actuator cam.
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Line up the heater/defroster valve lever with the mode actuator cam slot.
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Line up the A/C valve lever with the mode actuator cam
NOTE: Refer to Fastener Notice in Service Precautions.
2. Install the mode actuator mounting screws to the HVAC module.
Tighten
Tighten the screws to 1.6 N.m (14 lb in).
3. Connect the electrical connection at the mode actuator (10).
4. Install the center console duct.
5. Install the screws to the center console duct.