General Motors 25912406 Theft Deterrent Module

Technical engineering specifications for Genuine GM service part 25912406. This module integrates the theft deterrent sensing function within the ignition lock cylinder assembly. It communicates with the vehicle body control module to authorize engine start. The component monitors ignition switch position, lock cylinder rotation, and headlamp status for security system logic. OEM cross-reference interchange includes supplier numbers 022846, 24069317001OF, and R-LPD-05-0025. Designed for direct replacement in designated General Motors truck and SUV platforms requiring Passlock or VATS security systems.