Preliminary Procedure

CAUTION: To help avoid personal injury due to a retained load on the hydraulic modulator/motor pack assembly, and to prevent setting Diagnostic Trouble Codes (DTCs), the Gear Tension Relief function of the Tech 2 scan tool must be performed prior to removal of the hydraulic modulator.

NOTE:
Unit Removal:
The following service procedures shall be performed only after the hydraulic modulator/motor pack assembly has been removed from the vehicle. Do not perform these procedures with the unit installed on the vehicle.

Hydraulic Modulator Overhaul:
Complete overhaul of the hydraulic modulator is not authorized only the following steps. These steps will break the unit down into major components for replacement purposes.