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HOMESERVICE MANUALSCHEVROLET2009TAHOE BASE, 4.8 CREPAIR AND DIAGNOSIS (SINGLE PAGE)QUICK LOOKUPSWIRING DIAGRAMSCOMPONENT CONNECTOR END VIEWS - SIDE MARKER LAMP - LEFT FRONT (X88 OR Z88) - YAW AND LATERAL ACCELEROMETER SENSORSTRAILER BRAKE CONTROL MODULE (JL1)
2009 Chevrolet Tahoe Base, 4.8 C

Trailer Brake Control Module (JL1)

2009 Chevrolet Tahoe Base, 4.8 CSECTION Trailer Brake Control Module (JL1)
Fig 1: Trailer Brake Control Module (JL1) Connector End View
GM1711002Courtesy of GENERAL MOTORS CORP.
Trailer Brake Control Module (JL1)

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 0.5 YE 7635 Integrated Trailer Brake Controller Manual Apply Signal
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
26-27 - - Not Used
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
Connector Part Information 
  • OEM: 15491307
  • Service: See Catalog
  • Description: 47-Way F ASG Series Sealed (BK)
Terminal Part Information 
  • Pins: 1, 32
  • Terminal/Tray: 15476168/5
  • Core/Insulation Crimp: F/3
  • Release Tool/Test Probe: 15315247/J-35616-42 (RD)
  • Pins: 2, 6-9, 10-11, 14-15, 17, 21-22, 25, 28, 33, 37
  • Terminal/Tray: SAITS-A03T-M064/14
  • Core/Insulation Crimp: 9/9
  • Release Tool/Test Probe: J-38125-215A/J-35616-64B (L-BU)
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.