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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Drill Bit Set
Cobalt steel drill bit set
Heat Shrink
Heat shrink assortment
Soldering Hands
Soldering helping hands
Wire Loom
1/4" wire loom cable sleeve
Brake Controller Adapter
Tekonsha to GM brake controller adapter
Tekonsha P3 Brake Controller
Proportional trailer brake controller
Torch Tip
Trigger start torch tip
Solder
0.6mm lead rosin core solder wire
Soldering Iron
Weller Digital Soldering Station
1-1/4" Square Tubing
1-1/4" x 12" Square Tubing
Tekonsha Prodigy iD
Smart trailer brake controller
Zip Ties
8" Heavy Duty Zip Ties