Trailer Brake Control Relay (JL1)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Trailer Brake Control Relay (JL1) Connector End View

Courtesy of GENERAL MOTORS CORP.

Pin	Wire	Circuit	Function
A	3 D-BU	47	Trailer Brake Output Supply Voltage
B	3 BK	2150	Ground
C	0.5 TN	945	Integrated Trailer Brake Relay Control Active Low
D	0.5 L-GN	944	Relay Feedback
E	0.5 YE/BK	7521	Solid State Relay Enable
F	3 RD/BK	242	Battery Positive Voltage

Connector Part Information

Harness Type: Chassis
OEM Connector: 13521467
Service Connector: 13506001
Description: 6-Way F GT 280 Series, Sealed (BK)

Terminal Part Information

Pins: A, B, F
Terminated Lead: 13575403
Release Tool: J-38125-553
Diagnostic Test Probe: J-35616-4A (PU)
Terminal/Tray: 15304720/19
Core/Insulation Crimp: 4/5

Pins: C-E
Terminated Lead: 13327132
Release Tool: J-38125-553
Diagnostic Test Probe: J-35616-4A (PU)
Terminal/Tray: 15304719/19
Core/Insulation Crimp: E/5