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.
A26 Heater and Air Conditioning User Interface Control - Front
2025 Chevrolet Tahoe PPV, RWDSECTION A26 Heater and Air Conditioning User Interface Control - Front
Connector Part Information
|
Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool |
|---|---|---|---|
| I | 19370262 | EL-35616-58 (BK) | EL-38125-58 |
| II | 84729890 | J-35616-12 (BU) | J-38125-215A |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | VT / YE | 11748 | HVAC Indicator Supply Voltage | II | - |
| 2 | 0.5 | BK / WH | 1851 | Signal Ground | II | - |
| 3 | 0.5 | GN / BU | 11762 | HVAC Temperature 1 Encoder Phase A Signal | II | - |
| 4 | 0.5 | YE / WH | 11763 | HVAC Temperature 1 Encoder Phase B Signal | II | - |
| 5 | 0.5 | BU / GY | 11766 | HVAC Temperature 2 Encoder Phase A Signal | II | - |
| 6 | 0.5 | GY / WH | 11767 | HVAC Temperature 2 Encoder Phase B Signal | II | - |
| 7 | - | - | - | Not Occupied | - | - |
| 8 | 0.35 | GY / GN | 4636 | HVAC System Enable Signal | II | - |
| 9 | 0.35 | YE | 11737 | Front Defrost Switch Signal | I | - |
| 10 | 0.35 | BU / WH | 292 | Rear Defogger Switch Signal | I | - |
| 11 | 0.35 | VT | 11738 | HVAC Fan Up Switch Signal | I | - |
| 12 | 0.35 | GY | 11744 | HVAC Fan Down Switch Signal | I | - |
| 13 | 0.35 | GN | 11745 | HVAC Auto Mode Switch Signal | I | - |
| 14 | 0.35 | GN / YE | 11757 | HVAC White Backlighting Intensity Control | I | - |
| 15 | 0.35 | GN / BN | 11758 | HVAC Red Backlighting Intensity Control | I | - |
| 16 | 0.35 | GN / WH | 11759 | HVAC Blue Backlighting Intensity Control | I | - |
| 17 | 0.35 | GY / VT | 11760 | HVAC Amber Backlighting Intensity Control | I | - |
| 18 | 0.35 | BN / WH | 11761 | HVAC White Fan Backlighting Intensity Control | I | - |
| 19 | 0.35 | BK / YE | 1704 | Sensor Low Reference | I | - |
| 20 | 0.35 | WH / BK | 1923 | Auxiliary HVAC Switch Signal | I | - |
| 21 | 0.35 | BN / GN | 11754 | HVAC Auto Mode Indicator Control | I | - |
| 22 | 0.35 | GN / GY | 11749 | HVAC System Enable Indicator Control | I | - |
| 23 | 0.35 | BU / VT | 11752 | Front Defrost Indicator Control | I | - |
| 24 | 0.35 | YE / VT | 11753 | Rear Defog Indicator Control | I | - |
| 25 | 0.35 | GN / VT | 11755 | HVAC Air Conditioning Request Indicator Control | I | - |
| 26 | 0.35 | BN / BU | 11756 | HVAC Heat Request Indicator Control | I | - |
| 27 | 0.35 | BN | 11746 | HVAC Air Conditioning Request Switch Signal | I | - |
| 28 | 0.35 | BU / BN | 11747 | HVAC Heat Request Switch Signal | I | - |
| 29 | - | - | - | Not Occupied | - | - |
RENDER: 1.0x
NO RELATED
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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.