Dorman 604-161 HVAC Blend Door Actuator - Right Main

Overview of Dorman 604-161 HVAC Blend Door Actuator

The Dorman 604-161 HVAC Blend Door Actuator is designed specifically for Cadillac CTS and STS models. This rotary switch actuator is constructed from durable plastic, ensuring reliable operation within your vehicle's HVAC system.

• Rotary switch activation type for precise control
• Durable plastic material for long-lasting performance
• Compatible with Cadillac CTS and STS HVAC systems
• Includes one actuator per package
• OEM-quality replacement part number 604-161

Detailed Product Description

This HVAC blend door actuator by Dorman is engineered to regulate the airflow and temperature inside Cadillac CTS and STS vehicles by controlling the blend door position. The rotary switch activation type allows for smooth and accurate adjustments, contributing to consistent climate control. Made from high-quality plastic, the actuator is resistant to wear and environmental factors commonly found in automotive HVAC systems. The part number 604-161 ensures compatibility and ease of identification when replacing a faulty actuator.

Common Applications and Problem Resolution

This actuator is used to control the blend door in the HVAC system, which mixes hot and cold air to achieve the desired cabin temperature. It addresses several common issues, including:

• Inconsistent or incorrect cabin temperature regulation
• Unusual noises from the HVAC system during operation
• Failure of the blend door to move or respond to controls
• HVAC system stuck on one temperature setting
• Intermittent or complete loss of airflow control

Installation Notes and Tips

Installation of the Dorman 604-161 blend door actuator requires access to the HVAC housing inside the dashboard of Cadillac CTS and STS models. It is recommended to disconnect the vehicle battery before beginning installation to prevent electrical issues. Care should be taken to align the actuator correctly with the blend door shaft to ensure proper operation. Refer to the vehicle’s service manual for detailed removal and installation procedures.

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for Cadillac CTS and STS vehicles. The 604-161 HVAC blend door actuator undergoes rigorous quality control testing to ensure durability and functionality. Warranty coverage details can be obtained from the product documentation or Dorman’s official resources.