Installation Procedure

WARNING: This page is about a different variant/trim than selected.

Assemble the harness to the NEW encoder with the connector legend "TOP" (1) and the encoder part number facing up.

Fig 1: Encoder Harness Connector
Courtesy of GENERAL MOTORS CORP.
Assemble the output shaft into the encoder being sure to align the encoder tab with the groove on the shaft.
Ensure the encoder is seating properly on the output gear.
Place the output shaft/encoder on the casting.
Place the grommet harness on the casting slot, the flat area on the grommet will be facing up.
With the output gear/encoder assembly in hand, carefully align the casting and output gear timing marks (1).

Fig 2: Aligning Casting & Output Gear Timing Marks
Courtesy of GENERAL MOTORS CORP.
At the same time be sure to align the encoder phasing post (1) with the phasing slot (2) in the casting and insert the shaft into the bushing.

Fig 3: Aligning Encoder Phasing Post & Phasing Slot
Courtesy of GENERAL MOTORS CORP.
Verify that the output gear and idler gear are engaged properly.
Seat the harness wires on the casting channel.
Place the shim on the output shaft gear.
Press a NEW seal into the cover.
Install the cover.
NOTE: Refer to FASTENER NOTICE in Cautions and Notices.
Install 2 NEW screws (1) to the casting.

Fig 4: Installing Motor Cover Screws
Courtesy of GENERAL MOTORS CORP.

Tighten: Tighten the screws to 2 N.m (18 lb in).
Install 2 NEW longer screws (2) to the motor cover.
Tighten: Tighten the screws to 3 N.m (26 lb in).
Install the encoder motor. Refer to Transfer Case Encoder Motor Replacement .