Replacement RC41020008 HVAC Heater Blend Door Actuator - Passenger Side

The Replacement RC41020008 is an HVAC heater blend door actuator designed for the passenger side (right-hand) of the vehicle. This direct-fit aftermarket component replaces GM OEM part number 89018789 and restores proper climate control operation to the vehicle's heating, ventilation, and air conditioning system.

The blend door actuator is a small electric motor that controls the position of the blend door inside the HVAC housing. This door regulates the mix of hot air from the heater core and cold air from the A/C evaporator, allowing the climate control system to deliver the precise cabin temperature selected by the passenger. On dual-zone equipped vehicles, the driver and passenger each have a dedicated actuator — this unit services the passenger side.

Common Symptoms of a Failed Blend Door Actuator:

• Clicking or tapping noise from behind the dashboard, especially at startup or when changing temperature settings
• Passenger side blowing air at the wrong temperature regardless of climate control input
• HVAC controls that do not affect air temperature on the passenger side
• Inconsistent or stuck temperature output from passenger vents

Key Features:

• Direct replacement for OEM part number 89018789 (also cross-references 52474996)
• Designed to match original fit, form, and function for a plug-and-play installation
• Passenger side (RH) position specific
• Sold individually

Installation Note: Installation requires unplugging the electrical connector from the old actuator, removing the mounting screws, and fitting the new unit in its place. An HVAC system relearn or recalibration procedure may be required after installation for proper operation.

OEM Reference: 89018789 | Cross-Reference: 52474996