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jabres's avatar
jabres
Explorer II
Jan 15, 2019

"Service trailer brake system" on 2016 GMC

Have a 2016 GMC 3500, 6.0 gas job with 57K miles. Constantly now my computer screen beeps "Service Trailer Brake System", even when no trailer is hooked to truck.. took to my local trailer guy, he ...
Tow Vehicles
Fisherman's avatar
Fisherman
Explorer
Jan 15, 2019
Maybe a bit of road salt corrosion happening causing electrical gremlins to surface.

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