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 MANUALSCHEVROLET2005CHEVY EXPRESS G3500, VAN PASSENGER, LQ4REPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTINFOTAINMENTCELLULAR COMMUNICATION SYSTEMCOMPONENT LOCATORCELLULAR COMMUNICATION CONNECTORS
2005 Chevrolet Chevy Express G3500, Van Passenger, LQ4
Cellular Communication Connectors
2005 Chevrolet Chevy Express G3500, Van Passenger, LQ4SECTION Cellular Communication Connectors
Cellular Telephone Microphone
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| A | BARE | 1782 | Drain Wire |
| B | GY | 655 | Cellular Microphone Signal |
Vehicle Communication Interface Module (VCIM) - C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | - | - | Not Used |
| 2 | PU | 1156 | Keypad Red LED Signal |
| 3 | GY/BK | 1798 | Keypad Green LED Signal |
| 4-5 | - | - | Not Used |
| 6 | BN | 1941 | Keypad Supply Voltage |
| 7 | BK/WH | 351 | Ground |
| 8-10 | - | - | Not Used |
| 11 | PU | 679 | Keypad Signal |
| 12-14 | - | - | Not Used |
| 15 | RD/WH | 340 | Battery Positive Voltage |
| 16 | - | - | Not Used |
Vehicle Communication Interface Module (VCIM) - C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit No. | Function |
| 1 | D-BU | 658 | Cellular Telephone Voice Signal |
| 2 | L-BU/BK | 659 | Cellular Telephone Voice Low Reference |
| 3-4 | - | - | Not Used |
| 5 | YE | 1127 | Class 2 Serial Data |
| 6-7 | - | - | Not Used |
| 8 | BARE | 814 | Drain Wire |
| 9 | GY | 655 | Cellular Microphone Signal |
| 10 | BARE | 1782 | Drain Wire |
| 11-12 | - | - | Not Used |
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.