T6892003 | Genuine Paccar® Temperature Blend Door Actuator Module

• Moves the blend door to adjust how much air passes over the heater core (hot) or the AC evaporator (cold).

• Allows the system to produce warm, cool, or mixed air according to your setting.

2. Provide Comfort

• Maintains a consistent and comfortable temperature inside the vehicle.

• Automatically adapts if you adjust the temperature dial or use climate control.

3. Enable Climate Control Systems

• Works with automatic climate control to precisely control airflow and temperature without manual adjustment.

4. Improve Energy Efficiency

• By controlling air mixing efficiently, it reduces unnecessary heating or cooling.

• Air is hot when set to cold or cold when set to hot

• Inconsistent temperatures between vents

2. Clicking or Knocking Noises

• Repeated clicking, knocking, or popping sounds from behind the dashboard

• Caused by stripped gears or a stuck actuator

3. Air Only Blows Hot or Cold

• The system cannot mix hot and cold air

• Cabin temperature cannot reach the desired setting

4. Slow or Unresponsive Temperature Changes

• Adjusting the temperature dial or digital control doesn’t change airflow quickly

• HVAC seems laggy or delayed

5. Uneven Air Distribution

• Some vents blow correctly, others too hot or too cold

• Indicates the blend door is not moving properly

6. HVAC System Error Codes (for Digital Climate Control)

• Some modern vehicles will log a fault code for a malfunctioning actuator

• May trigger a climate control warning