Dorman 604-158 HVAC Blend Door Actuator - Main

Overview of Dorman HVAC Blend Door Actuator 604-158

The Dorman HVAC Blend Door Actuator 604-158 is designed specifically for Cadillac CTS and SRX 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 airflow control
• Durable plastic material for long-lasting performance
• Compatible with Cadillac CTS and SRX models
• Includes one actuator per package
• OEM-quality replacement part number 604-158

Detailed Product Description

The Dorman 604-158 HVAC Blend Door Actuator is engineered to regulate the blend door position in the heating, ventilation, and air conditioning system of Cadillac CTS and SRX vehicles. Featuring a rotary switch activation type, this actuator provides accurate modulation of airflow temperature by controlling the blend door's movement. Made from robust plastic, the actuator withstands the thermal and mechanical stresses typical in automotive HVAC environments. This part is an exact replacement designed to restore proper HVAC function and maintain cabin comfort.

Common Applications and Issues Resolved

• Eliminates inconsistent cabin temperature due to faulty blend door movement
• Resolves HVAC system noises caused by worn or broken actuators
• Fixes failure of air temperature adjustment in Cadillac CTS and SRX models
• Addresses blend door actuator motor failure symptoms
• Restores proper airflow direction and temperature mixing

Installation Notes and Tips

• Ensure vehicle compatibility with Cadillac CTS or SRX before installation
• Disconnect the battery prior to actuator replacement to avoid electrical issues
• Carefully remove the old actuator to prevent damage to blend door components
• Verify actuator alignment and secure mounting to ensure proper operation
• Test HVAC system functionality after installation to confirm repair

Quality Assurance and Warranty

Dorman parts are manufactured to meet or exceed OEM standards, providing reliable performance for your Cadillac CTS or SRX. The 604-158 HVAC Blend Door Actuator undergoes rigorous quality control to ensure durability and fitment accuracy. This part is backed by Dorman's limited warranty, offering coverage against defects in material and workmanship under normal use.