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 17 (COMPONENT CONNECTOR END VIEWS (K20 - K60))COMPONENT CONNECTOR END VIEWSK33 HVAC CONTROL MODULE X2
2019 Chevrolet Tahoe LS, 4WD, Gas/Ethanol
K33 HVAC Control Module X2
2019 Chevrolet Tahoe LS, 4WD, Gas/EthanolSECTION K33 HVAC Control Module X2
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2018 GMC Yukon XL, 2018 GMC Yukon, 2018 Chevrolet Tahoe, 2018 Chevrolet Suburban 3500 HD, and 2018 Chevrolet Suburban. However, it is still accessible from the selected car via links, so may be relevant.
Connector Part Information
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Terminal Part Information
| Terminal Type ID | Terminated Lead | Diagnostic Test Probe | Terminal Removal Tool | Service Terminal | Tray Name | Core Crimp | Insulation Crimp |
|---|---|---|---|---|---|---|---|
| I | Not Required | J-35616-64B (LT BU) | No Tool Required | Not Required | Not Required | Not Required | Not Required |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | RD/VT | 3340 | Battery Positive Voltage | I | - |
| 2 | 0.35 | GN | 5060 | Low Speed GMLAN Serial Data | I | - |
| 3 | - | - | - | Not Occupied | - | - |
| 4 | 0.35 | GN/YE | 7531 | Local Interconnect Network Serial Data Bus 9 | I | - |
| 5 - 7 | - | - | - | Not Occupied | - | - |
| 8 | 0.35 | BK/WH | 1851 | Signal Ground | I | - |
| 9 | 0.5 | VT/GY | 539 | Run/Crank Ignition 1 Voltage | I | - |
| 10 | 0.5 | BU/YE | 7574 | Electric Variable Displacement Control | I | - |
| 11 | 0.5 | BU/BN | 7573 | Electric Variable Displacement Supply | I | - |
| 12 - 14 | - | - | - | Not Occupied | - | - |
| 15 | 0.5 | BU/GY | 754 | Blower Motor Speed Control | I | - |
| 16 | 0.35 | GN/BK | 2211 | Rear Blower Motor Speed Control | I | - |
| 17 | 0.35 | GY/RD | 598 | 5V Reference | I | - |
| 18 | 0.35 | BK/YE | 1791 | Air Temperature Door Control Low Reference | I | - |
| 19 | 0.35 | BN/VT | 193 | Rear Defog Relay Control | I | - |
| 20 | - | - | - | 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.