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GM Trailer Brake Control Module (TBCM) — also listed as the Trailer Brake Power Control Module (K133) — part number 85073617, programmed to your VIN and ready to install.
This module drives the electric brake output for the factory integrated trailer brake controller. Typical symptoms: "Service Trailer Brake System" message, no trailer brake output, or trailer brake DTCs that follow the module.
2016–2018 trucks: the trailer brake system also depends on the K38 Chassis Control Module (84196606). If your codes point to the Chassis Control Module instead, see that listing or message us with your VIN and codes.
Fits (confirm by VIN):
Chevrolet Silverado 1500 2014–2018, 2019 LD
Chevrolet Silverado 2500 HD / 3500 HD 2015–2019
GMC Sierra 1500 / Sierra Denali 1500 2014–2018, 2019 Limited
GMC Sierra 2500 HD / 3500 HD 2015–2019
Chevrolet Tahoe / Suburban 2015–2020
GMC Yukon / Yukon XL / Yukon Denali 2015–2020
Cadillac Escalade / Escalade ESV 2015–2020
Chevrolet Colorado / GMC Canyon 2016–2022
Chevrolet Silverado 4500 HD / 5500 HD medium duty (GM bulletin 23-NA-149 lists 23337305) — confirm by VIN
Interchange / superseded part numbers (all replaced by 85073617):
23104453, 23114650, 23337305
What you get:
Plug and play
What we need: your 17-digit VIN at checkout.
Not for: 2019+ new-body Silverado / Sierra 1500, 2020+ HD, or 2023+ Colorado / Canyon — those use 85073615. 2021+ Tahoe / Suburban / Yukon / Escalade use 85073616.
Not sure this is the right module? Send us your VIN or the number off your unit and we'll confirm the exact match — same business day, Mon–Fri.
GM Trailer Brake Control Module (TBCM) — also listed as the Trailer Brake Power Control Module (K133) — part number 85073617, programmed to your VIN and ready to install.
This module drives the electric brake output for the factory integrated trailer brake controller. Typical symptoms: "Service Trailer Brake System" message, no trailer brake output, or trailer brake DTCs that follow the module.
2016–2018 trucks: the trailer brake system also depends on the K38 Chassis Control Module (84196606). If your codes point to the Chassis Control Module instead, see that listing or message us with your VIN and codes.
Fits (confirm by VIN):
Chevrolet Silverado 1500 2014–2018, 2019 LD
Chevrolet Silverado 2500 HD / 3500 HD 2015–2019
GMC Sierra 1500 / Sierra Denali 1500 2014–2018, 2019 Limited
GMC Sierra 2500 HD / 3500 HD 2015–2019
Chevrolet Tahoe / Suburban 2015–2020
GMC Yukon / Yukon XL / Yukon Denali 2015–2020
Cadillac Escalade / Escalade ESV 2015–2020
Chevrolet Colorado / GMC Canyon 2016–2022
Chevrolet Silverado 4500 HD / 5500 HD medium duty (GM bulletin 23-NA-149 lists 23337305) — confirm by VIN
Interchange / superseded part numbers (all replaced by 85073617):
23104453, 23114650, 23337305
What you get:
Plug and play
What we need: your 17-digit VIN at checkout.
Not for: 2019+ new-body Silverado / Sierra 1500, 2020+ HD, or 2023+ Colorado / Canyon — those use 85073615. 2021+ Tahoe / Suburban / Yukon / Escalade use 85073616.
Not sure this is the right module? Send us your VIN or the number off your unit and we'll confirm the exact match — same business day, Mon–Fri.