2019-2023 Sierra/Silverado: Trailer Brake Controller Install 2/2

2019-2023 Sierra/Silverado: Trailer Brake Controller Install

Time: 30min - 1hr (mounting preference)

Difficulty: easy-moderate

Cost: $150-250

Unfortunately, you cannot add an OEM trailer brake controller to your GM product if it didn't come equipped from the factory. GM did, however, provide connector access into the main harness for aftermarket controller installation.

Watch the video below to see the trailer brake controller installation on a 2020 GMC Sierra 1500 Pickup. Connector location, splicing, and mounting shown. The process is the same for Silverado, Tahoe, Yukon, and Suburban. 2019, 2020, 2021, 2022, 2023.

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