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 1756 (CELLULAR SYSTEM, ENTERTAINMENT SYSTEM, AND NAVIGATION SYSTEM)COMPONENT LOCATORENTERTAINMENT/COMMUNICATION CONNECTOR END VIEWSRADIO C1
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Radio C1
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Radio C1
WARNING: This page is about a different car, the 2007 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Radio C1 Connector Parts Information
Connector Part Information
|
Radio C1 Connector Terminal Identification
| Pin | Wire Color | Circuit No. | Function |
|---|---|---|---|
| 1 | OG | 2140 | Battery Positive Voltage |
| 2 | GY | 8 | I/P Lamps Dimmer Switch Signal |
| 3 | - | - | Not Used |
| 4 | D-GN | 117 | RF Speaker Output (-) |
| 5 | L-GN | 200 | RF Speaker Output (+) |
| 6 | GY | 118 | LF Speaker Output (-) |
| 7 | TN | 201 | LF Speaker Output (+) |
| 8 | BK/WH | 151 | Ground |
| 9 | D-GN | 5060 | Low Speed GMLAN Serial Data |
| 10 | D-GN | 5060 | Low Speed GMLAN Serial Data |
| 11 | D-BU | 1796 | Remote Radio Control Supply Voltage |
| 12-13 | - | - | Not Used |
| 14 | YE | 43 | Accessory Voltage |
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.