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 MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1115 (WIRING SYSTEMS - CONNECTOR END VIEWS)CONNECTOR END VIEWSINLINE HARNESS CONNECTOR END VIEWSC305
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Inline Harness Connector End Views: C305
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION C305
WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.
C305 Connector End View
| Connector Part Information |
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Connector Part Information |
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|---|---|---|---|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function | Pin | Wire Color | Circuit No. | Function |
| A | BRN | 882 | Right Rear Wheel Speed Sensor Signal (JM4/JL9) | 1A | BRN | 882 | Right Rear Wheel Speed Sensor Signal (JM4/JL9) |
| B | WHT | 883 | Right Rear Wheel Speed Sensor Low Reference (JM4/JL9) | 1B | WHT | 883 | Right Rear Wheel Speed Sensor Low Reference (JM4/JL9) |
| C | BLK | 884 | Left Rear Wheel Speed Sensor Signal (JM4/JL9) | 1C | BLK | 884 | Left Rear Wheel Speed Sensor Signal (JM4/JL9) |
| D | RED | 885 | Left Rear Wheel Speed Sensor Low Reference (JM4/JL9) | 1D | RED | 885 | Left Rear Wheel Speed Sensor Low Reference (JM4/JL9) |
| A | LT BLU | 1296 | Axle Actuator - Control (AWD&JM4/JL9) | 2A | LT BLU | 1296 | Axle Actuator - Control (AWD&JM4/JL9) |
| B | PNK | 1439 | Ignition 1 Voltage | 2B | PNK | 1439 | Ignition 1 Voltage |
| C | BLK | 550 | Ground (JM4/JL9) | 2C | BLK | 550 | Ground (JM4/JL9) |
| D | - | - | Not Used (JM4/JL9) | 2D | - | - | Not Used (JM4/JL9) |
| A | BLK | 250 | Ground | 3A | BLK | 250 | Ground |
| B | BLK/WHT | 2759 | Low Reference | 3B | BLK | 2759 | Low Reference |
| C | GRY | 120 | Fuel Pump Supply Voltage | 3C | GRY | 120 | Fuel Pump Supply Voltage |
| D | PPL | 1589 | Fuel Level Sensor Signal | 3D | PPL/WHT | 1589 | Fuel Level Sensor Signal |
| E | DK GRN | 890 | Fuel Tank Pressure Sensor Signal | 3E | DK GRN | 890 | Fuel Tank Pressure Sensor Signal |
| F | WHT | 1310 | EVAP Canister Vent Solenoid Control | 3F | WHT | 1310 | EVAP Canister Vent Solenoid Control |
| G | ORN | 4540 | Battery Positive Voltage | 3G | ORN | 4540 | Battery Positive Voltage |
| H | GRY/BLK | 2709 | 5-Volt Reference | 3H | GRY | 2709 | 5-Volt Reference |
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.