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.
SYS.OK|MANUAL.DBβ LIVE
HOMESERVICE MANUALSCHEVROLET2003TRAILBLAZER 4.2 S, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1677 (ENTERTAINMENT SYSTEM)COMPONENT LOCATORENTERTAINMENT CONNECTOR END VIEWS
2003 Chevrolet TrailBlazer 4.2 S, 4WD
Entertainment Connector End Views
2003 Chevrolet TrailBlazer 4.2 S, 4WDSECTION Entertainment Connector End Views
WARNING: This page is about a different car, the 2003 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
Amplifier C1 (w/WBM)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| A1 | D-GN | 117 | RF Speaker - |
| A2 | L-GN | 200 | RF Speaker Output (+) |
| A3 | L-BU | 115 | RR Speaker Output (-) |
| A4 | D-BU | 46 | RR Speaker Output (+) |
| A5 | OG | 360 | AMP Control |
| A6 | OG | 1950 | AMP Sense |
| A7-A8 | - | - | Not Used |
| A9 | D-GN | 117 | RF Speaker Output (-) |
| A10 | L-GN | 200 | RF Speaker Output (+) |
| A11 | L-BU | 115 | RR Speaker Output (-) |
| A12 | D-BU | 46 | RR Speaker Output (+) |
| B1 | GY | 118 | LF Speaker Output (-) |
| B2 | TN | 201 | LF Speaker Output (+) |
| B3 | YE | 116 | LR Speaker Output (-) |
| B4 | BN | 199 | LR Speaker Output (+) |
| B5-B8 | - | - | Not Used |
| B9 | GY | 118 | LF Speaker Output (-) |
| B10 | TN | 201 | LF Speaker Output (+) |
| B11 | YE | 116 | LR Speaker Output (-) |
| B12 | BN | 199 | LR Speaker Output (+) |
Amplifier C2 (w/WBM)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| A | L-GN/BK | 1794 | Left Subwoofer Speaker Output (-) |
| B | D-BU/WH | 346 | Left Subwoofer Speaker Output (+) |
| C | BK | 850 | Ground |
| D | OG | 2340 | Battery Positive Voltage |
| E-F | - | - | Not Used |
| G | D-GN | 1795 | Right Subwoofer Speaker Output (+) |
| H | L-BU/BK | 315 | Right Subwoofer Speaker Output (-) |
Radio C1
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| A1-A2 | - | - | Not Used |
| A3 | OG | 360 | Amplifier Control (w/ WBM/UR9/UP0) |
| A4 | YE | 43 | Accessory Voltage |
| A5-A7 | - | - | Not Used |
| A8 | BN | 199 | LR Speaker Output (+) |
| A9 | YE | 116 | LR Speaker Output (-) |
| A10 | D-GN | 117 | RF Speaker Output (+) |
| A11 | L-GN | 200 | RF Speaker Output (-) |
| A12 | BK/WH | 151 | Ground |
| B1 | OG | 2140 | Battery Positive Voltage |
| B2-B3 | - | - | Not Used |
| B4 | GY | 8 | I/P Lamps Dimmer Switch Signal |
| B5 | - | - | Not Used |
| B6 | OG | 1950 | Amplifier Sense (w/ WBM/UR9/UP0) |
| B7 | - | - | Not Used |
| B8 | TN | 201 | LF Speaker Output (+) |
| B9 | GY | 118 | LF Speaker Output (-) |
| B10 | L-BU | 115 | RR Speaker Output (-) |
| B11 | D-BU | 46 | RR Speaker Output (+) |
| B12 | BN | 9 | Park Lamp Supply Voltage |
Radio C2
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| A-G | - | - | Not Used |
| H | D-GN/WH | 368 | Right Audio Signal (+) (w/UE1) |
| J | BN/WH | 367 | Left Audio Signal (+) (w/UE1) |
| K | BK/WH | 372 | Audio Common (w/UE1) |
| L | - | - | Not Used |
| M | YE/BK | 693 | Mute Signal (w/UE1) |
Speaker - LF
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| 1 | GY | 118 | LF Speaker Output (-) |
| 2 | TN | 201 | LF Speaker Output (+) |
Speaker - LR
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| 1 | YE | 116 | LR Speaker Output (-) |
| 2 | BN | 199 | LR Speaker Output (+) |
Speaker - RF
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| 1 | D-GN | 117 | RF Speaker Output (-) |
| 2 | L-GN | 200 | RF Speaker Output (+) |
Speaker - RR
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| 1 | L-BU | 115 | RR Speaker Output (-) |
| 2 | D-BU | 46 | RR Speaker Output (+) |
Speaker - LF (Tweeter) (w/WBM or UR9/UP0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| 1 | GY | 118 | LF Speaker Output (-) |
| 2 | TN | 201 | LF Speaker Output (+) |
Speaker - RF (Tweeter) (w/WBM or UR9/UP0)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| 1 | D-GN | 117 | RF Speaker Output (-) |
| 2 | L-GN | 200 | RF Speaker Output (+) |
Speaker - Subwoofer (w/WBM)
| Connector Part Information |
|
||
|---|---|---|---|
| Pin | Wire Color | Circuit Number | Function |
| A | L-GN/BK | 1794 | Left Subwoofer Speaker Output (-) |
| B | D-BU/WH | 346 | Left Subwoofer Speaker Output (+) |
| C | L-BU/BK | 315 | Right Subwoofer Speaker Output (-) |
| D | D-GN | 1795 | Right Subwoofer Speaker Output (+) |
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:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.