A-Premium Trailer Brake Control Switch 84108373 — Direct-Fit OEM Replacement, 8-Pin Snap-In

The A-Premium Trailer Brake Control Switch 84108373 is a direct-fit dashboard replacement switch that restores factory trailer brake control functions on compatible Chevrolet and GMC trucks and SUVs.

If your vehicle’s trailer brake control switch is cracked, non-responsive, or producing error codes, this A-Premium replacement provides the same terminal layout and mounting style as the original so you can quickly regain trailer braking control. Designed for snap-fit installation into the dash and built with an 8-pin connector and male pin terminals, it pairs with the factory wiring harness on supported Chevrolet and GMC models for a fast swap without splicing or modifying the vehicle.

Which vehicles does this switch fit?

This A-Premium switch is engineered to match OEM specifications for a range of Chevrolet and GMC trucks and SUVs from mid-2010s to 2020. Confirm your vehicle year and trim against the listed fitment table, and check for matching connector type and dashboard cutout before ordering.

• Chevrolet: Colorado (2016–2021), Silverado 1500 (2014–2019), Silverado 2500/2500 HD (2015–2019), Silverado 3500/3500 HD (2015–2019), Suburban (2016–2020), Tahoe (2016–2020)
• GMC: Canyon (2016–2021), Sierra 1500 & 1500 Limited (2014–2019), Sierra 2500/3500 HD (2015–2019), Yukon & Yukon XL (2016–2020)
• Reference numbers: TBM003, 84108373, 23145874 for cross-checking compatibility

How easy is the installation and what are the electrical specs?

Installation is straightforward for anyone comfortable removing dash trim and unplugging a single connector; the switch snaps into the factory opening and mates to the OEM female harness. It uses an 8-terminal configuration with male pin terminals and a female connector interface, matching original equipment pinout and mounting style.

• Terminal count: 8 pins
• Attachment: direct snap-fit into dashboard opening
• Connector gender: female (on harness), terminal gender: male (on switch)
• Terminal type: pin for secure electrical contact

Will this switch resolve trailer brake error messages and help towing safety?

Replacing a damaged or non-functional trailer brake control switch with this OEM-style unit often clears dash warnings tied to control input faults and restores proper manual control over trailer braking. While the switch itself provides the user interface and correct electrical connections, full towing safety depends on proper system diagnostics, trailer wiring, and brake control module health.

• Restores factory switch functions and connector compatibility
• Helps eliminate switch-related fault codes when other systems are healthy
• Works with the vehicle’s existing trailer brake module and wiring harness
• Recommended to test trailer brakes after installation and verify module status

What warranty and quality assurances come with this part?

A-Premium backs this trailer brake control switch with a one-year unlimited-mileage guarantee, which covers defects in materials and workmanship under normal use. The unit is manufactured to meet fitment and terminal specifications so it installs like the original without extra adapters or rewiring.

• One-year unlimited-mileage warranty from A-Premium
• Manufactured to OEM-style terminal and mounting specifications
• Supplied with reference numbers for easy cross-referencing

Who is this for: This replacement is aimed at owners and technicians of Chevrolet and GMC trucks and SUVs listed above who need a reliable, direct-fit trailer brake control switch to replace a worn, cracked, or faulty factory unit. It’s ideal for towing enthusiasts, fleet maintenance shops, and DIY mechanics who want a plug-and-play solution that restores dash control and maintains original connector integrity.