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.
SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISELECTRICALWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (Q77H - X92)COMPONENT CONNECTOR END VIEWSS34 HVAC CONTROLS SWITCH ASSEMBLY X2
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
S34 HVAC Controls Switch Assembly X2
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION S34 HVAC Controls Switch Assembly X2
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-35616-4A (PU) | No Tool Required | Not Required | Not Required | Not Required | Not Required |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| A | 0.8 | YE | 60 | Low Blower Motor Control | I | - |
| B | 0.8 | TN | 63 | Medium Blower Motor Control 1 | I | - |
| C | 0.8 | L-BU | 72 | Medium 2 Blower Motor Control | I | - |
| D | 0.8 | OG | 52 | High Blower Motor Control | I | - |
| E | 1 | BN | 141 | Run Ignition 3 Voltage | I | - |
| F | 0.8 | L-BU | 733 | Air Temperature Door Position Signal | I | - |
| G | 1 | WH | 119 | Mode Door Control | I | - |
| H | 0.5 | D-GN/WH | 762 | A/C Request Signal | I | - |
RENDER: 1.0x
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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.