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 MANUALSCHEVROLET2008CHEVY EXPRESS G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1041 (TRAILER BRAKE CONTROL SYSTEM)COMPONENT LOCATORTRAILER BRAKE CONTROL CONNECTORSTRAILER BRAKE CONTROL PANEL SWITCH

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6

Trailer Brake Control Panel Switch

2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Trailer Brake Control Panel Switch

WARNING: This page is about a different car, the 2007 GMC Sierra and 2007 Chevrolet Silverado. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Trailer Brake Control Panel Switch Connector End View

Courtesy of GENERAL MOTORS CORP.

Trailer Brake Control Panel Switch Connector Parts Information

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)

Trailer Brake Control Panel Switch Connector Terminal Identification

Pin	Wire Color	Circuit No.	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

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.