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 MANUALSCHEVROLET2001SUBURBAN C1500REPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSELECTRICAL COMPONENT LOCATIONSWIRING SYSTEMS - COMPONENT LOCATOR - ELECTRICAL CENTER IDENTIFICATION VIEWSELECTRICAL CENTER IDENTIFICATION VIEWSBODY JUNCTION BLOCK - - CONNECTOR END VIEWSJUNCTION BLOCK - BODY C2
2001 Chevrolet Suburban C1500
Junction Block - Body C2
2001 Chevrolet Suburban C1500SECTION Junction Block - Body C2
Junction Block - Body C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A1 | ORN | 1732 | Courtesy Lamps Supply Voltage |
| A2 | DK BLU | 1393 | Interior Lamp Relay Coil Control |
| A3 | DK BLU | 45 | Park Lamp Supply Voltage |
| A4-A5 | - | - | Not Used |
| A6 | LT BLU | 74 | Park Lamp Switch Signal |
| A7 | ORN | 240 | Battery Positive Voltage |
| A8 | - | - | Not Used |
| A9 | DK BLU | 15 | Right Turn Signal Lamps Supply Voltage |
| DK BLU | 15 | Right Turn Signal Lamps Supply Voltage | |
| A10 | ORN | 1440 | Battery Positive Voltage |
| A11-A12 | - | - | Not Used |
| B1 | ORN | 1732 | Courtesy Lamps Supply Voltage |
| B2-B4 | - | - | Not Used |
| B5 | LT BLU | 14 | Left Turn Signal Lamps Supply Voltage |
| LT BLU | 14 | Left Turn Signal Lamps Supply Voltage | |
| B6 | WHT | 1080 | Park Lamp Relay Control |
| B7 | - | - | Not Used |
| B8 | BLK/WHT | 451 | Ground |
| B9 | DK BLU | 15 | Right Turn Signal Lamps Supply Voltage |
| DK BLU | 15 | Right Turn Signal Lamps Supply Voltage | |
| B10-B12 | - | - | Not Used |
| C1 | - | - | Not Used |
| C2 | ORN | 40 | Battery Positive Voltage |
| ORN | 40 | Battery Positive Voltage | |
| C3 | LT GRN/BLK | 592 | DRL Relay Control |
| C4 | - | - | Not Used |
| C5 | LT BLU | 14 | Left Turn Signal Lamps Supply Voltage |
| LT BLU | 14 | Left Turn Signal Lamps Supply Voltage | |
| C6-C7 | - | - | Not Used |
| C8 | BLK/WHT | 451 | Ground |
| BLK/WHT | 451 | Ground | |
| C9 | BLK | 1850 | Ground |
| BLK | 1850 | Ground | |
| C10 | BLK | 1850 | Ground |
| BLK | 1850 | Ground | |
| C11 | BLK | 1850 | Ground |
| C12 | ORN | 2340 | Battery Positive Voltage |
| D1-D2 | - | - | Not Used |
| D3 | GRY | 8 | Instrument Panel Lamp Supply Voltage |
| D4 | GRY | 8 | Instrument Panel Lamp Supply Voltage |
| D5 | DK GRN/WHT | 817 | Vehicle Speed Signal |
| DK GRN/WHT | 817 | Vehicle Speed Signal | |
| D6-D7 | - | - | Not Used |
| D8 | BLK/WHT | 451 | Ground |
| D9 | BLK | 1850 | Ground |
| D10 | LT BLU | 1620 | Trailer CHMSL Supply Voltage |
| D11 | ORN | 2240 | Battery Positive Voltage |
| ORN | 2240 | Battery Positive Voltage | |
| D12 | ORN | 2340 | Battery Positive Voltage |
| E1-E4 | - | - | Not Used |
| E5 | DK GRN/WHT | 817 | Vehicle Speed Signal |
| DK GRN/WHT | 817 | Vehicle Speed Signal | |
| E6-E9 | - | - | Not Used |
| E10 | RED | 142 | Battery Positive Voltage |
| E11 | PNK | 739 | Ignition 1 Voltage |
| E12 | - | - | Not Used |
| F1-F4 | - | - | Not Used |
| F5 | DK GRN/WHT | 817 | Vehicle Speed Signal |
| F6 | DK GRN/WHT | 817 | Vehicle Speed Signal |
| F7 | - | - | Not Used |
| F8 | BRN | 2409 | Interior Park Lamps Supply Voltage |
| BRN | 2409 | Interior Park Lamps Supply Voltage | |
| F9 | BRN | 39 | Ignition 1 Voltage |
| BRN | 39 | Ignition 1 Voltage | |
| F10 | DK BLU | 47 | Trailer Auxiliary Supply Voltage |
| F11 | YEL | 243 | Accessory Voltage |
| F12 | BLK | 2550 | Ground |
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.