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 MANUALSCHEVROLET2019TAHOE LS, 4WD, GAS/ETHANOLREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 3 (COMPONENT CONNECTOR END VIEWS - K20 X3 LGZ TO K109)COMPONENT CONNECTOR END VIEWSK74 HUMAN MACHINE INTERFACE CONTROL MODULE X2
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
K74 Human Machine Interface Control Module X2
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION K74 Human Machine Interface Control Module X2
WARNING: This page is about a different car, the 2017 GMC Canyon and 2017 Chevrolet Colorado. However, it is still accessible from the selected car via links, so may be relevant.
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray Name | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | 13575845 | J-35616-64B (LT BU) | J-38125-215A | SAIT-A03T-M064 | Yazaki 14 | P | P |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.35 | WH/VT | 3999 | MOST Control | I | - |
| 2 | 0.5 | WH/GN | 3997 | MOST Serial Data (-) | I | - |
| 3 | 0.5 | GY/VT | 3998 | MOST Serial Data (+) | I | - |
| 4 | - | - | - | Not Occupied | - | - |
| 5 | 0.35 | GY/YE | 6972 | Camera Signal 2 + | I | - |
| 6 | 0.35 | WH/L-BU | 6973 | Camera Signal 2 | I | - |
| 7 | - | - | - | Not Occupied | - | - |
| 8 | 0.5 | GY/VT | 3998 | MOST Serial Data (+) | I | - |
| 9 | 0.5 | WH/GN | 3997 | MOST Serial Data (-) | I | - |
| 10 - 12 | - | - | - | Not Occupied | - | - |
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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.