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Home >> Cadillac >> 2013 >> Escalade Base, AWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Transfer Case - Mp 3023/3024-NQH) >> Description and Operation >> Transfer Case Description and Operation >> Transfer Case Two/Four Wheel Drive Actuator Assembly

Transfer Case Two/Four Wheel Drive Actuator Assembly

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Fig 1: Transfer Case Two/Four Wheel Drive Actuator Assembly
GM1986212Courtesy of GENERAL MOTORS COMPANY

The transfer case two/four wheel drive actuator assembly consists of a permanent magnet DC motor and gear reduction assembly. It is located on the left hand side, driver's side, of the transfer case. When activated, it turns the shift detent lever shaft of the transfer case, clockwise or counterclockwise, to shift the transfer case. The motor/encoder is controlled with a PWM signal by the transfer case shift control module. This circuit consists of a driver on both the Motor A and Motor B circuits. The encoder motor is bi-directional in order to allow the motor to shift the transfer case from 2HI or 4HI to NEUTRAL and 4LO positions.