I have a 2015 Yukon XL Denali with 19K miles on it. It is stored indoors in a climate controlled area. In the past couple years the “service trailer brake system” message comes on frequently, and is a royal pain in the butt on a 2hour trip. As such, it gets driven even less that it has been historically.
I’ve changed the trailer brake module out, inspected the ground connections and checked the multi-pin connectors, etc., etc. I am an electrician by trade and am at a loss on what to do next.
I am reluctant to take this to the local GMC dealer as they always seem to just start changing out parts until they finally remove the problem thousands of dollars later… Does anyone have any thoughts on this or a remedy that works? I’ve only towed my fishing boat with this vehicle once. Is it possible to simply de-program the trailer brake system all together?
I’ve changed the trailer brake module out, inspected the ground connections and checked the multi-pin connectors, etc., etc. I am an electrician by trade and am at a loss on what to do next.
I am reluctant to take this to the local GMC dealer as they always seem to just start changing out parts until they finally remove the problem thousands of dollars later… Does anyone have any thoughts on this or a remedy that works? I’ve only towed my fishing boat with this vehicle once. Is it possible to simply de-program the trailer brake system all together?
