Power Steering Assist Motor Replacement

Fig 1: Power Steering Assist Motor

Courtesy of GENERAL MOTORS COMPANY

Callout	Component Name
CAUTION: Electrostatic discharge (ESD) can damage many solid-state electrical components. ESD susceptible components may or may not be labeled with the ESD symbol. Handle all electrical components carefully. Use the following precautions in order to avoid ESD damage: Touch a metal ground point in order to remove your body's static charge before servicing any electronic component; especially after sliding across the vehicle seat. Do not touch exposed terminals. Terminals may connect to circuits susceptible the ESD damage. Do not allow tools to contact exposed terminals when servicing connectors. Do not remove components from their protective packaging until required to do so. Avoid the following actions unless required by the diagnostic procedure: Jumpering or grounding of the components or connectors. Connecting test equipment probes to components or connectors. Connect the ground lead first when using test probes. Ground the protective packaging of any component before opening. Do not rest solid-state components on metal workbenches, or on top of TVs, radios, or other electrical devices. Preliminary Procedures Capture the key cycle count from the old steering gear control module. Refer to Power Steering Control Module Programming and Setup (Variable Effort Steering) , Power Steering Control Module Programming and Setup (Electronic Power Steering) . Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle . Remove the steering gear. Refer to Steering Gear Replacement (NJ0 or NJ1) , Steering Gear Replacement (NV7, NXB, NXC, or N40) .
1	Power Steering Assist Motor Bolt (Qty: 3) CAUTION: Refer to Fastener Caution . Procedure Remove the 3 power steering assist motor bolts. Discard the bolts. Install 3 NEW power steering assist motor bolts. Tighten 8 N.m (71 lb in)
2	Power Steering Assist Motor Procedure Remove the O-ring from the steering gear housing. Discard the O-ring. Install a NEW O-ring around the steering gear housing. Install the steering gear coupling to the assist motor armature. Align the steering gear coupling on the assist motor armature to the steering gear. Align the power steering assist motor bolts to the steering gear while pressing the motor over the gear housing O-ring. After the installation is complete, transfer the key cycle count from the old steering gear control module to the new steering gear control module. Refer to Power Steering Control Module Programming and Setup (Variable Effort Steering) , Power Steering Control Module Programming and Setup (Electronic Power Steering) .

Callout

Component Name

CAUTION:

Electrostatic discharge (ESD) can damage many solid-state electrical components. ESD susceptible components may or may not be labeled with the ESD symbol. Handle all electrical components carefully. Use the following precautions in order to avoid ESD damage:

Touch a metal ground point in order to remove your body's static charge before servicing any electronic component; especially after sliding across the vehicle seat.
Do not touch exposed terminals. Terminals may connect to circuits susceptible the ESD damage.
Do not allow tools to contact exposed terminals when servicing connectors.
Do not remove components from their protective packaging until required to do so.
Avoid the following actions unless required by the diagnostic procedure:
- Jumpering or grounding of the components or connectors.
- Connecting test equipment probes to components or connectors. Connect the ground lead first when using test probes.
Ground the protective packaging of any component before opening. Do not rest solid-state components on metal workbenches, or on top of TVs, radios, or other electrical devices.

Preliminary Procedures

Capture the key cycle count from the old steering gear control module. Refer to Power Steering Control Module Programming and Setup (Variable Effort Steering) , Power Steering Control Module Programming and Setup (Electronic Power Steering) .
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Remove the steering gear. Refer to Steering Gear Replacement (NJ0 or NJ1) , Steering Gear Replacement (NV7, NXB, NXC, or N40) .

Power Steering Assist Motor Bolt (Qty: 3)

CAUTION:

Refer to Fastener Caution .

Procedure

Remove the 3 power steering assist motor bolts.
Discard the bolts.
Install 3 NEW power steering assist motor bolts.

Tighten
8 N.m (71 lb in)

Power Steering Assist Motor

Procedure

Remove the O-ring from the steering gear housing.
Discard the O-ring.
Install a NEW O-ring around the steering gear housing.
Install the steering gear coupling to the assist motor armature.
Align the steering gear coupling on the assist motor armature to the steering gear.
Align the power steering assist motor bolts to the steering gear while pressing the motor over the gear housing O-ring.
After the installation is complete, transfer the key cycle count from the old steering gear control module to the new steering gear control module. Refer to Power Steering Control Module Programming and Setup (Variable Effort Steering) , Power Steering Control Module Programming and Setup (Electronic Power Steering) .