Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 446 (VEHICLE DIAGNOSTIC INFORMATION (1 OF 2))SPECIFICATIONSPOWER STEERING CONTROL MODULE SCAN TOOL INFORMATION
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Power Steering Control Module Scan Tool Information
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Power Steering Control Module Scan Tool Information
WARNING: This page is about a different car, the 2009 Cadillac STS. However, it is still accessible from the selected car via links, so may be relevant.
Power Steering Control Module Scan Tool Data Parameters
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON | |||
| AFS Actuator Angle | - | Varies | This displays °. This is the current angle of the active front steering (AFS) actuator. |
| AFS Heat Protection | - | Varies | The scan tool displays Active or Inactive. This is the state of the active front steering (AFS) heat protection. |
| AFS Lock Solenoid | - | Unlocked | The scan tool displays Locked or Unlocked. This is the state of the active front steering (AFS) lock solenoid. |
| AFS Motor Command | - | Varies | This displays %. This is the active front steering (AFS) motor percentage. |
| PSCM Centered | - | Yes | The scan tool displays Yes or No. Yes is displayed if the power steering control module (PSCM) is centered. |
| Steering Wheel Sensor Signal | - | Valid | The scan tool displays Valid or Invalid. This is the state of the steering wheel sensor signal. |
| TCM Status Signal | - | Valid | The scan tool displays Valid or Invalid. This is the state of the transmission control module (TCM) signal. |
| VSCM Veh. Spd. Signal | - | Valid | The scan tool displays Valid or Invalid. This is the state of the vehicle stability control module (VSCM) vehicle speed signal. |
Power Steering Control Module Scan Tool Output Controls
| Output Control | Description |
|---|---|
| Actuator Removal Procedure | This output control is used to remove an actuator. |
| New Actuator Setup Procedure | This output control is used to setup a new actuator. |
| PSCM Calibration Procedure | This output control is used to calibrate a power steering control module (PSCM). |
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.