Dorman 901-251 Brake Light Switch

Brake Light Switch Replacement for GM Trucks and SUVs

Dorman 901-251 is a direct replacement brake light switch for specific Cadillac, Chevrolet, and GMC applications. It restores brake lamp switch function when the original unit fails, using a push-style design with a 4-terminal blade connector layout.

Key Features

• Direct replacement brake light switch for selected GM vehicles
• Push switch type with 4 male blade terminals
• 1 rectangle male connector for straightforward electrical connection
• No wiring harness included
• No mounting hardware included
• OE-style replacement for applications requiring Dorman 901-251

Detailed Description

This brake light switch is built for 2007-2011 Cadillac Escalade, Escalade ESV, and Escalade EXT; 2007-2011 Chevrolet Avalanche, Silverado 1500, Silverado 2500, Silverado 2500 HD, Suburban 1500, Suburban 2500, and Tahoe; and 2007-2011 GMC Sierra, Sierra 1500, Sierra 2500 HD, Yukon, Yukon XL 1500, and Yukon XL 2500. Dorman 901-251 directly replaces the original equipment switch on these vehicle applications to restore brake lamp operation and related switch-controlled functions. This part cross-references ACDelco-style applications such as 25981009 and SW8252 for the same application.

What It Helps Fix

• Brake lights that stay off when the pedal is pressed
• Intermittent brake lamp operation
• Brake switch electrical signal loss
• Problems caused by a worn or failed pedal-mounted switch
• Brake light circuit faults tied to the original switch

Installation Notes and Tips

Verify connector shape, terminal count, and vehicle application before installation. This switch uses a rectangle male connector with male blade terminals and a push-style actuator. No wiring harness or mounting hardware is included, so reuse existing vehicle components where applicable and confirm proper pedal engagement after installation.

Quality Assurance

Dorman manufactures this brake light switch as a direct replacement part for specific OE applications, with fitment coverage for 2007-2011 Cadillac Escalade, Chevrolet Silverado, and GMC Sierra platforms. Confirm the part number 901-251 against the vehicle’s original switch configuration before ordering.