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2022 Sierra brake control system disconnect

Herb128

By Herb128
in Trailers, Hitches, & Towing

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Herb128 New Member

Herb128

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Just purchased a 22 Sierra Elevation. Hooked up my travel trailer tested brakes with hand switch, work great. Once you depress brake pedal dic message "service trailer brakes system" and the brakes are disconnected  by the truck. Never any issues with 17 Sierra. Is it a trailer problem or truck problem? 

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