Installation Procedure

IMPORTANT: Provided the rotary position sensor was removed, follow steps (1-5) to install the sensor, otherwise proceed to step 6 installing the motor/encoder to the transfer case.

Connect the wiring harness to the rotary position sensor.
Gently insert a suitable tool along side the internal wires and press down on the internal wire connector to insure the connector is fully installed.

Fig 1: Aligning Keyway With Rotary Position Sensor & Motor/Encoder Shaft

GM1238219

Courtesy of GENERAL MOTORS CORP.

Properly align the keyway of the rotary position sensor with the motor/encoder shaft as indicated by the center reference line shown in the graphic.

Fig 2: Removing/Installing Gasket, Rotary Position Sensor & Motor/Encoder Housing

GM1237683

Courtesy of GENERAL MOTORS CORP.

Ensure that the hex on the rotary position sensor (2) fits in the hex of the motor/encoder housing (3).
Install the motor/encoder baseplate/gasket (1).

Fig 3: View Of Motor/Encoder Assembly

GM743566

Courtesy of GENERAL MOTORS CORP.

IMPORTANT: When performing this service procedure, make sure that the motor/encoder unit is flat against the transfer case for proper installation.

Install the motor/encoder to the transfer case.

Fig 4: Locating Motor/Encoder And Harness Mounting Bolts

GM743564

Courtesy of GENERAL MOTORS CORP.

NOTE: Refer to Fastener Notice in Cautions and Notices.

Install motor/encoder mounting bolts to the transfer case.
Tighten: Tighten the bolts to 16 N.m (12 lb ft).

Fig 5: Disconnecting/Connecting Motor/Encoder Electrical Connector

GM1234201

Courtesy of GENERAL MOTORS CORP.

Connect the motor/encoder electrical connector (1).
Install the fuel tank shield, if equipped. Refer to Fuel Tank Shield Replacement in Frame and Underbody.
Lower the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.