Dorman HVAC Blend Door Actuator for Dodge Ram 1500/2500/3500 — 604-005 Direct-Fit, OE-Style Replacement

The Dorman 604-005 HVAC blend door actuator is a direct-fit replacement actuator engineered to restore proper heating, ventilation and air conditioning airflow control on specific Dodge and Ram vehicles.

If your cabin vents are blowing only hot or cold air, producing unusual noises, or certain vents won’t change temperature, a faulty blend door actuator can be the cause. The Dorman 604-005 is built to match the OE fit and function for designated Chrysler group vehicles and must be installed in the correct position with calibration using a compatible scan tool to regain full HVAC control.

Which vehicles and positions does this actuator fit?

This actuator is application-specific and replaces the original unit on select Dodge Ram and Ram pickup models across several model years. Fitment varies by model year, trim and the actuator’s location within the HVAC system, so confirm your exact vehicle details before ordering.

• Compatible with Dodge Ram 1500 (2009–2010) and Ram 1500/1500 Classic (2011–2021, select years).
• Also fits Ram 2500, 3500, 4500 and 5500 across 2010–2019 model ranges where specified.
• Use the garage/vehicle lookup tool or application notes to verify position-specific compatibility.

How does the Dorman 604-005 install and what tools are needed?

Installation replaces the original blend door actuator in the correct HVAC location; access and removal steps depend on dash layout and the actuator’s position. After mechanical installation, an appropriate scan tool is required to calibrate the actuator so it synchronizes with the HVAC control system.

• Basic hand tools typically handle mechanical removal and installation.
• Calibration requires a compatible scan tool or visit to a service center with diagnostic equipment.
• Refer to vehicle service procedures or a qualified technician if you’re unsure which actuator to replace.

What performance and durability features does this actuator offer?

Dorman designs replacement actuators to meet strict durability and electrical protection standards so the part resists premature wear and motor burnout. This helps restore reliable vent movement and consistent airflow control when matched to the correct vehicle position.

• Engineered to match original actuator movement and mounting points for proper operation.
• Electrical and mechanical components tested to reduce failure from wear or short circuits.
• Position-specific design ensures correct motion direction and range for the targeted door.

How do I confirm I’m ordering the right part?

Because many vehicles use multiple actuators with unique orientations and functions, verifying application notes and entering your vehicle’s year, make, model and trim into the fitment tool is essential. If you cannot determine which actuator position is faulty, seek guidance from an experienced technician.

• Enter your vehicle details into the online garage or fitment checker before purchase.
• Compare the part number and actuator location against the failed unit you’re replacing.
• If uncertain, remove the old actuator or consult a mechanic for accurate identification.

Who is this for? The Dorman 604-005 HVAC blend door actuator is aimed at owners and technicians working on compatible Dodge and Ram pickup trucks who need a dependable, position-specific replacement. It’s a practical choice for DIY mechanics comfortable with dash access and who have—or can obtain—scan-tool calibration, as well as for repair shops that service HVAC doors on the listed model years.