Replacement RC32400002 Front Axle 4WD Disconnect Actuator Assembly OEM 12471631

The Replacement RC32400002 is a front axle disconnect actuator assembly designed as a direct OEM replacement for GM trucks and SUVs equipped with selectable four-wheel drive (4WD) systems. This actuator is a common wear item and a leading cause of 4WD engagement failure and "Service 4WD" warning light illumination on affected vehicles.

The front axle disconnect actuator is an electrically operated component mounted on the passenger side of the engine oil pan, opposite the front differential. When the driver selects a 4WD mode, the Transfer Case Control Module (TCCM) sends a signal to the actuator, which extends a plunger to move a shift fork and connect a splined sleeve to the front passenger-side axle shaft. This locks the front axle so the transfer case can deliver power to the front wheels. When switching back to 2WD, the actuator retracts to disconnect the axle, reducing drivetrain rolling resistance and helping protect differential and prop-shaft seals.

Key Features:

• Direct bolt-on OEM replacement — no modifications required
• Restores proper 4WD and AWD engagement
• Helps maintain front differential and prop-shaft seal integrity
• Reduces drivetrain rolling resistance in 2WD mode, supporting fuel efficiency
• Complete assembly including actuator motor and disconnect housing
• Replaces OEM part number 12471631

Cross-Reference Part Numbers: 12471631, 12471623, 15884292, 600115, 600-103, 12479081, 12479302, 12471625, 12471627, 12471628

This part is designed for selectable 4WD-equipped models only (vehicles with a 2HI mode on the dash selector). It is not intended for full-time AWD systems.