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 MANUALSCHEVROLET2020EXPRESS 2500 LS, 2.8L ENG VIN 1REPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS (B136-K9 (X5))COMPONENT CONNECTOR END VIEWSB303 TRANSMISSION RANGE SENSOR (M5U/MQD)
2020 Chevrolet Express 2500 LS, 2.8L Eng VIN 1
B303 Transmission Range Sensor (M5U/MQD)
2020 Chevrolet Express 2500 LS, 2.8L Eng VIN 1SECTION B303 Transmission Range Sensor (M5U/MQD)
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 | Not Required | Not Available | No Tool Required | Not Required | Not Required | Not Required | Not Required |
| Pin | Size | Color | Circuit | Function | Terminal Type ID | Option |
|---|---|---|---|---|---|---|
| 1 | 0.5 | GN/YE | 3337 | Transmission Internal Mode Switch Mode Control Y | I | - |
| 2 | 0.5 | WH/RD | 596 | 5 Volt Reference 2 | I | - |
| 3 | 0.5 | BK/GY | 3927 | Transmission Internal Mode Switch Feedback Signal | I | - |
| 4 | 0.5 | BU/WH | 3338 | Transmission Internal Mode Switch Mode Control X | I | - |
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.