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 DIAGNOSIS (SINGLE PAGE)GENERAL INFORMATIONOEM GENERAL INFORMATIONVEHICLE DIAGNOSTIC SCAN TOOL INFORMATION (2 OF 2)SPECIFICATIONSK299R AUDIO/VIDEO INTERFACE REAR MODULE: SCAN TOOL INFORMATION
2025 Chevrolet Tahoe Commercial, 4WD
K299R Audio/Video Interface Rear Module: Scan Tool Information
2025 Chevrolet Tahoe Commercial, 4WDSECTION K299R Audio/Video Interface Rear Module: Scan Tool Information
Audio/Video Interface Rear Module Scan Tool Data Parameters
| Parameter | Expected Value | Definition |
|---|---|---|
| Operating Conditions: Ignition ON | ||
| Vehicle Power Mode | Enumeration | 0 = Off, 1 = Accessory, 2 = Run, 3 = Start/Request, 4 = Propulsion |
| Vehicle Power Mode Invalidity | True or False | The scan tool displays an invalid power mode. |
| Diagnostic Data Identifier | Unsigned Numeric | Identifies a supplier and system specific data stream used by diagnostic testers to interpret a diagnostic data stream. |
| Manufacture's Traceability Characters | Varies | The scan tool displays the Manufacture's Traceability Characters. |
| ECU ID | Varies | The scan tool displays the ECU ID. |
| Application Software Identification Data Identifier | Varies | The scan tool displays the Application Software Identification Data Identifier. |
| Vehicle Identification Number | Varies | The scan tool displays the vehicle identification number. |
| Repair Shop Code or Tester Serial Number | Varies | The scan tool displays the Repair Shop Code or Tester Serial Number. |
| Programming Date | Varies | The scan tool displays the date the module was programmed. |
| Manufacturers Enable Counter | Varies | The scan tool displays the Manufacturers Enable Counter. |
| ECU Diagnostic Address | Varies | The scan tool displays the ECU Diagnostic Address. |
| GM End Model Part Number | Varies | The scan tool displays the GM End Model Part Number. |
| GM Base Model Part Number | Varies | The scan tool displays the GM Base Model Part Number. |
| GM Base Model Part Number Alpha Code | Varies | The scan tool displays the GM Base Model Part Number Alpha Code. |
| GM End Model Part Number Alpha Code | Varies | The scan tool displays the GM End Model Part Number Alpha Code. |
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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.