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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSGMC2021SIERRA 2500 HD AT4, 6.6L ENG VIN 7REPAIR AND DIAGNOSISGENERAL INFORMATIONOEM GENERAL INFORMATIONVEHICLE DIAGNOSTIC SCAN TOOL INFORMATION (2 OF 2)SPECIFICATIONSK43 POWER STEERING CONTROL MODULE: SCAN TOOL INFORMATION
2021 GMC Sierra 2500 HD AT4, 6.6L Eng VIN 7
K43 Power Steering Control Module: Scan Tool Information
2021 GMC Sierra 2500 HD AT4, 6.6L Eng VIN 7SECTION K43 Power Steering Control Module: Scan Tool Information
Power Steering Control Module Scan Tool Data Parameters
| Parameter | System State | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON | |||
| Ignition Cycle Counter | - | Varies | This displays the number of ignition cycles. |
| ECU Internal Temperature | - | Varies | This displays ° C. This is the current internal temperature of the ECU |
| Steering Wheel Angle | - | Varies | This displays Degrees. This displays the current steering wheel angle in degrees. |
| EPS Motor Overload Protection Counter | - | Varies | This displays counts. This displays the Electric Power Steering Motor Overload Protection Incidents counter. |
| EPS System Status | - | True/False | Indicates the status of Vehicle Speed Validity, AHA Calibration, and AHA Setup Procedure. |
| Engine Speed | - | 0 RPM | This displays RPM. This is the current engine speed from the ECM. |
| Vehicle Speed Low Resolution | - | 0 Km/h (0 MPH) | This displays km/h (mph). This is the current vehicle speed. |
| Vehicle Speed Medium Resolution | - | 0 Km/h (0 MPH) | This displays km/h (mph). This is the current vehicle speed. |
| Driver Mode Control State | - | No Actcion/Performance Mode 1 - 7 | This displays the current drive mode. |
| Steering Wheel Angle Gradient | - | Varies | This displays degrees/sec. This is the rate at which the steering angle is changing. |
| AHA Coil Current Commanded | - | Varies | This displays the amount of current commanded by the AHA coil.. |
| AHA Coil Current Measured | - | Varies | This displays the actual measured current of the AHA coil. |
| AHA Right Hydraulic Pressure | - | Varies | This is the current pressure (Bar) of the right side of the AHA system. |
| AHA Left Hydraulic Pressure | - | Varies | This is the current pressure (Bar) of the left side of the AHA system. |
| AHA Differential Hydraulic Pressure | - | Varies | This is the current pressure (Bar) of the differential in the AHA system. |
| AHA Pull Hydraulic Pressure Compensation Value | - | Varies | This displays the AHA pull hydraulic pressure compensation value (Bar). |
| Time Since Ignition On | - | Varies | This displays the time (ms) since the ignition was switched to ON. |
| System Power Mode | - | OFF/ACC/RUN/Crank Request | This displays the current power mode. |
| Battery Voltage | - | Varies | This displays the current battery voltage. |
| Engine Running Status | - | True/False | This displays the engine running status. |
| AHA System Status | - | Disable/Off/Operate/Warm Initialization | This displays the current status of the AHA system |
Power Steering Control Module Scan Tool Output Controls
| Output Control | Description |
|---|---|
| Cancel All Active Device Controls | Command to cancel any active device controls. |
| Steering Assist Control | Command to enable or disable Power Assist and to change Power Assist Mode. |
| Reset Adaptive Data | Command to reset adaptive parameters to default/unlearned values. The AHA ECU shall reset both short and long term pull compensation values. |
| Clear End of Line Gear Parameters | Command to clear the end of line gear parameters to their default values. |
| Pressure Sensor Trim | Command to trim the pressure sensor. Set Trim shall set the pressure trim value to the current Pressure 1 sensor input and Pressure 2 sensor input and set the pressure trim performed flag to indicate that a trim has been performed. |
| AHA Device Controls | Ignition cycle values while this command is active shall not be permanently stored. Values will only be retained for one ignition cycle. |
| System Basic Functions | Command to disable all device outputs of the AHA ECU. |
RENDER: 1.0x
NO RELATED
Recommended Tools & Savings
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
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.