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.
2015 Chevrolet Tahoe LTZ, 4WDFACTORY OEM SERVICE PROCEDURE
K73 Telematics Communication Interface Control Module X2
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 13575546 | J-35616-16 (LT GN) | J-38125-559 | 15445905 | Delphi 23 | J | J |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.35 | YE | 658 | Cellular Telephone Voice Signal | I | - |
| 2 | 0.35 | BK/YE | 659 | Cellular Telephone Voice Low Reference | I | - |
| 3 | 0.5 | D-BU | 2500 | High Speed GMLAN Serial Data (+) (1) | I | - |
| 4 | 0.5 | WH | 2501 | High Speed GMLAN Serial Data (-) (1) | I | - |
| 5 | 0.5 | BARE | 1792 | Low Reference | I | - |
| 6 | 0.35 | GY/YE | 5149 | Voice Recognition Audio Signal | I | - |
| 7 | 0.35 | WH/D-BU | 5986 | Serial Data Communication Enable | I | - |
| 8 | 0.35 | BARE | 1782 | Low Reference | I | - |
| 9 | 0.35 | D-BU | 655 | Cellular Telephone Microphone Signal | I | - |
| 10 | 0.35 | BK/BN | 654 | Cellular Telephone Microphone Low Reference | I | - |
| 11 | - | - | - | Not Occupied | - | - |
| 12 | 0.35 | BK/GY | 5152 | Voice Recognition Audio Low Reference | I | - |
Factory Service Tools
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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.
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