Trailer Brake Control Module (JL1 except 31 Series)
WARNING: This page is about a different car, the 2014 GMC Sierra 3500 HD, 2014 GMC Sierra 2500 HD, 2014 Chevrolet Silverado 3500 HD, and 2014 Chevrolet Silverado 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
Connector Part Information
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Terminal Part Information
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Trailer Brake Control Module (JL1 except 31 Series)
| Pin | Wire | Circuit | Function |
|---|---|---|---|
| 1 | 2 BK | 1750 | Ground |
| 2 | 0.5 D-BU | 7632 | 5-Volt Reference |
| 3-5 | - | - | Not Used |
| 6 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-) |
| 7 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+) |
| 8 | 0.5 TN | 7631 | Low Reference |
| 9 | 0.5 L-GN | 944 | Relay Feedback |
| 10 | - | - | Not Used |
| 11 | 0.5 L-GN/BK | 7633 | Integrated Trailer Brake Controller User Gain Signal |
| 12-13 | - | - | Not Used |
| 14 | 0.5 TN | 945 | Integrated Trailer Brake Relay Control Active Low |
| 15 | 0.5 PK | 239 | Ignition 1 Voltage |
| 16 | - | - | Not Used |
| 17 | 0.5 L-BU | 5986 | Serial Data Communication Enable |
| 18-20 | - | - | Not Used |
| 21 | 0.5 TN | 2501 | High Speed GMLAN Serial Data Bus (-) |
| 22 | 0.5 TN/BK | 2500 | High Speed GMLAN Serial Data Bus (+) |
| 23-24 | - | - | Not Used |
| 25 | 0.5 BN | 7634 | Integrated Trailer Brake Controller Redundant Manual Apply Signal |
| 26 | - | - | Not Used |
| 27 | 0.5 YE | 7635 | Integrated Trailer Brake Controller Manual Apply Signal |
| 28 | 0.5 D-BU | 47 | Solid State Relay Feedback |
| 29-31 | - | - | Not Used |
| 32 | 2 RD/WH | 4340 | Battery Positive Voltage |
| 33 | 0.5 YE/BK | 7521 | Solid State Relay Enable |
| 34-36 | - | - | Not Used |
| 37 | 0.5 L-BU/WH | 6311 | TCC Brake Signal |
| 38-47 | - | - | Not Used |