Electric Trailer Brake Control Wiring Provisions
These wiring provisions for an electric trailer brake controller are included with the vehicle as part of the trailer wiring package.
The instrument panel contains blunt cut wires behind the steering column for the electric trailer brake controller. The harness contains the following wires:
• Red/Black: Power Supply
• White: Brake Switch Signal
• Gray: Illumination
• Dark Blue: Trailer Brake Signal
• Black: Ground
The electric trailer brake controller should be installed by your dealer or a qualified service center.
See also:
Online Owner Center
Manage your vehicle (U.S.) at gmc.com. Click on “Owners,” then “Manage My GMC/Owners Login.”
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Driver Information Center (DIC)
The vehicle has a Driver Information Center (DIC).
The DIC displays information about this vehicle. It also displays warning messages if a system problem is detected.
All messages will appear in the ...
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Selecting the right engine oil depends on both the proper oil specification and viscosity grade.
See Recommended Fluids and Lubricants on page 11‑12.
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