Dorman 604-131 HVAC Blend Door Actuator - Auxiliary

HVAC Blend Door Actuator for Auxiliary Temperature Control

This Dorman HVAC blend door actuator is a rotary, plastic replacement built for specific auxiliary temperature control applications. It is engineered to match the fit and operating performance of the original actuator on select Pontiac Montana and Oldsmobile Silhouette models.

• Rotary switch activation type for HVAC blend door control
• Plastic housing construction
• Direct replacement for the original actuator on listed vehicles
• Supports auxiliary temperature blend door operation
• Part number 604-131 for easy identification

Detailed Product Overview

Dorman 604-131 is an HVAC heater blend door actuator designed for specific 2001-2005 Pontiac Montana and 2001-2004 Oldsmobile Silhouette applications with auxiliary temperature control. It is built to replicate the original actuator’s function so the HVAC system can direct heated or cooled air through the correct blend door position. This part cross-references Standard Ignition ADR124 for the same application.

For buyers searching for a 2001-2005 Pontiac Montana auxiliary temperature blend door actuator or a 2001-2004 Oldsmobile Silhouette HVAC actuator, this replacement provides a direct-fit service part for the listed positions. The Dorman 604-131 designation also helps confirm the correct component when comparing OE-style replacement options.

Common Problems This Part Can Address

• Incorrect cabin temperature from the auxiliary HVAC system
• Blend door movement that is stuck or inconsistent
• Loss of temperature control in the rear or auxiliary climate circuit
• HVAC clicking or actuator-related noise during operation
• Failure of the blend door to respond to temperature changes

Installation Notes and Tips

Verify the vehicle year, make, model, and auxiliary position before ordering. This actuator is listed for temperature control applications and module assembly configurations on the specified Pontiac Montana and Oldsmobile Silhouette models. Compare the original connector, mounting points, and actuator style to confirm a proper match before installation.

Quality Assurance

Dorman engineers this HVAC heater blend door actuator to align with the quality and performance of the original part on the listed vehicles. The rotary activation design and application-specific fitment support consistent HVAC operation in the intended auxiliary temperature system.