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 MANUALSCHEVROLET2025TAHOE COMMERCIAL, 4WDREPAIR AND DIAGNOSISGENERAL INFORMATIONOEM GENERAL INFORMATIONVEHICLE DIAGNOSTIC SCAN TOOL INFORMATION (2 OF 2)SPECIFICATIONSP16 INSTRUMENT PANEL CLUSTER CONTROL MODULE: SCAN TOOL INFORMATION
2025 Chevrolet Tahoe Commercial, 4WD
P16 Instrument Panel Cluster Control Module: Scan Tool Information
2025 Chevrolet Tahoe Commercial, 4WDSECTION P16 Instrument Panel Cluster Control Module: Scan Tool Information
Instrument Cluster Scan Tool Data Parameters
| Parameter | Expected Value | Description |
|---|---|---|
| Operating Conditions: Ignition ON | ||
| Battery Voltage | 12 - 14 V | The scan tool displays Volts. This is the current battery voltage signal. |
| Key in Ignition Status | Active/Inactive | The scan tool displays Active or Inactive. This is the state of the key in ignition switch. |
| Driver Information Center Switch | Varies | The scan tool displays Volts. This is the current driver information center switch input voltage. |
| Driver Information Center Switch | Inactive | The scan tool displays either Inactive, Up, Down, or Menu. This is the state of the driver information center switch. |
| Reset Switch | Active/Inactive | The scan tool displays Active or Inactive. This is the state of the reset switch. |
| Ambient Air Temperature | 15°C | The scan tool displays outside temperature in °C. |
| Washer Fluid Level Switch | Open | The scan tool displays either Open, Closed, or Not Available. |
| Odometer Lock Status | Active/Inactive | The scan tool displays Active or Inactive depending on the state of the odometer. |
| Engine Speed | 0 RPM | The scan tool displays the filtered value of engine speed. |
| Vehicle Speed | 0 km/h | The scan tool displays the filtered vehicle speed value. |
| Fuel Level Sensor | - | The scan tool displays the filtered value of the fuel level. |
| Engine Coolant Temperature | - | The scan tool displays the filtered value of the engine coolant temperature. |
| Engine Oil Pressure | - | The scan tool displays the filtered value of the engine oil pressure. |
| Head-Up Display Dimming Level | percentage | The scan tool displays the current dimming intensity level. |
| Head-Up Display Switch | Head-Up Display Movement, Head Up Page Switch, Head-Up Display Dimming Level | The scan tool displays the current HUD button being pushed. |
| Steering Wheel Control Switches | Left, Select, Right, Volume UP, Volume Down | The scan tool displays the current steering wheel controls button being pushed. |
Instrument Cluster Scan Tool Output Controls
| Output Control | Description |
|---|---|
| Instrument Cluster Gauge Sweep | This function is used to command the gauges to sweep from minimum to maximum. |
| Driver Information Center Dimming | This function is used to command the dimming of the driver information display to Increase or Decrease by 10%. |
| Instrument Panel Dimmer Switch | This function is used to command the dimming of the instrument cluster to Increase or Decrease by 10%. |
| Driver Information Center Segments | This function is used to command the driver information center segments ON and OFF. |
| All Indicators | This function is used to command all the indicators ON or OFF. |
| Driver Information Center Options | This function is used to command the driver information center buttons using the scan tool. |
| CAN Bus Configuration Learn | This function is used to Reset the source ID for low speed CAN Bus communications. |
| Head Up Display Dimming Level | This function is used to command the dimming of the head up display to Increase or Decrease. |
| Head Up Display Pattern Check | This function is used to command the head up display to display a striped test pattern. |
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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.