A-Premium Trailer Brake Control Switch for Chevrolet & GMC — 84108373 8‑Pin Dash-Mount Direct-Fit

The A-Premium Trailer Brake Control Switch 84108373 is a direct-fit, dash-mounted replacement switch designed to restore trailer brake control functionality on compatible Chevrolet and GMC trucks and SUVs.

If your vehicle's factory trailer brake control switch has failed, become intermittent, or shows physical damage, the A-Premium 84108373 delivers a plug-and-play replacement engineered to match OE terminal layout and mounting style. It fits a wide range of Chevrolet and GMC full-size trucks and SUVs from mid-2010s model years and includes the same 8-terminal pin configuration and snap-fit attachment used by the original part.

Which vehicles will this switch work with?

This switch is built to be compatible with many GM models. Check the fitment list against your VIN or parts diagram to confirm exact compatibility before ordering.

• Chevrolet: Colorado (2016–2021), Silverado 1500 (2014–2019), Silverado 2500/2500 HD (2015–2019), Silverado 3500/3500 HD (2015–2018/2015–2019), Suburban (2016–2020), Tahoe (2016–2020)
• GMC: Canyon (2016–2021), Sierra 1500 and 1500 Limited (2014–2019), Sierra 2500 HD and 3500 HD (2015–2019), Yukon and Yukon XL (2016–2020)
• Reference numbers for cross-checking: TBM003, 84108373, 23145874

How does this part install into the dashboard?

Installation is straightforward for technicians and experienced DIYers because the switch uses the original mounting and connector style. It fastens with a snap-fit method and plugs directly into the factory wiring harness without splicing.

• Mounting location: dashboard — designed to replace factory switch in same aperture
• Attachment method: direct snap-fit for secure, tool-minimal installation
• Connector: female housing mates to vehicle harness; 8 terminals (male pins)

What are the electrical and mechanical specifications?

The switch matches the OE terminal layout and uses standard pin terminals for reliable electrical contact. Its specifications are listed to help confirm compatibility with vehicle wiring and control modules.

• Terminal quantity: 8-pin arrangement matching factory connector
• Terminal type/gender: male pin terminals; switch connector is female
• Designed to operate as the original dash-mounted trailer brake control input switch

What warranty and quality assurances are included?

A-Premium backs this part with a one-year unlimited-mileage guarantee to cover workmanship and material defects. The product is manufactured to meet aftermarket quality expectations and is offered as a reliable replacement option.

• One-year unlimited-mileage warranty from A-Premium
• Manufactured and tested for fitment and function on listed models
• Sold as a replacement switch to restore factory trailer brake control operation

Who is this for: The A-Premium Trailer Brake Control Switch 84108373 is aimed at owners and technicians working on mid-2010s Chevrolet and GMC trucks and SUVs who need a dependable, direct-fit dashboard switch replacement. If your vehicle shows trailer brake faults, warning lights, or the switch is physically damaged, this replacement part offers an economical way to restore proper control input without modifying vehicle wiring.