Electronic Power Steering Motor Control Module Replacement

WARNING: This page is about a different car, the 2012 GMC Sierra, 2012 GMC Cab & Chassis Sierra, 2012 Chevrolet Silverado, and 2012 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Electronic Power Steering Motor Control Module

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
WARNING: Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed. The High Voltage Disabling procedure will perform the following tasks: Identify how to disable high voltage. Identify how to test for the presence of high voltage. Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed. Failure to follow the procedures exactly as written may result in serious injury or death. Preliminary Procedures Perform the high voltage disabling procedure. Refer to High Voltage Disabling . Remove the drive motor generator control module. Refer to Drive Motor Generator Control Module Assembly Replacement .
1	Electronic Power Steering Control Module Bolt (Qty: 3) CAUTION: Refer to Fastener Caution . Tighten 9 N.m (80 lb in)
2	Electronic Power Steering Control Module Procedure Disconnect any electrical connectors as needed. After repairs, perform the high voltage system connect procedure. Refer to High Voltage Enabling . After enabling the high voltage system, perform the power steering control module setup procedure. Refer to Power Steering Control Module Programming and Setup .

Callout

Component Name

WARNING:

Always perform the High Voltage Disabling procedure prior to servicing any High Voltage component or connection. Personal Protection Equipment (PPE) and proper procedures must be followed.

The High Voltage Disabling procedure will perform the following tasks:

Identify how to disable high voltage.
Identify how to test for the presence of high voltage.
Identify condition under which high voltage is always present and personal protection equipment (PPE) and proper procedures must be followed.

Failure to follow the procedures exactly as written may result in serious injury or death.

Preliminary Procedures

Perform the high voltage disabling procedure. Refer to High Voltage Disabling .
Remove the drive motor generator control module. Refer to Drive Motor Generator Control Module Assembly Replacement .

Electronic Power Steering Control Module Bolt (Qty: 3)

CAUTION:

Refer to Fastener Caution .

Tighten
9 N.m (80 lb in)

Electronic Power Steering Control Module

Procedure

Disconnect any electrical connectors as needed.
After repairs, perform the high voltage system connect procedure. Refer to High Voltage Enabling .
After enabling the high voltage system, perform the power steering control module setup procedure. Refer to Power Steering Control Module Programming and Setup .