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HOMESERVICE MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 2257 (WIRING SYSTEMS AND POWER MANAGEMENT - COMPONENT CONNECTOR END VIEWS PART 4)TRAILER BRAKE CONTROL SWITCH (JL1)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2

Trailer Brake Control Switch (JL1)

2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Trailer Brake Control Switch (JL1)
WARNING: This page is about a different car, the 2009 GMC Sierra, 2009 GMC Cab & Chassis Sierra, 2009 Chevrolet Silverado, and 2009 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Trailer Brake Control Switch (JL1) Connector End View
GM1716517Courtesy of GENERAL MOTORS CORP.
Trailer Brake Control Switch (JL1)

Pin Wire Circuit Function
1-2 - - Not Used
3 0.35 D-BU 7632 5-Volt Reference
4 0.35 YE 7635 Integrated Trailer Brake Controller Manual Apply Signal
5 0.35 BN 7634 Integrated Trailer Brake Controller Redundant Manual Apply Signal
6 0.35 L-GN/BK 7633 Integrated Trailer Brake Controller User Gain Signal
7 0.35 YE 6817 LED Backlight Dimming Control
8 0.35 TN 7631 Ground Return
Connector Part Information 
  • OEM: 13518475
  • Service: See Catalog
  • Description: 8-Way F YESC Kaizen Series (BK)
Terminal Part Information 
  • Pins: 3-8
  • Terminal/Tray: 7116-4618-02/14
  • Core/Insulation Crimp: P/P
  • Release Tool/Test Probe: J-38125-215/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.