Dorman 600-506 Transfer Case Switch

Transfer Case Switch for GM 4x4 Applications

Dorman 600-506 is a direct replacement transfer case switch for select Chevrolet, GMC, and Cadillac 4x4 vehicles. It is built for transfer case-mounted applications with a 2-pin connector, making it a practical OE-style solution for restoring transfer case signal function.

Key Features

• Direct replacement transfer case switch for select GM trucks and SUVs
• Pin terminal design with 2 terminals
• Mounts on the transfer case on listed applications
• No wiring harness included
• Package contents: switch

Detailed Description

This Dorman transfer case switch, part number 600-506, is made to replace the original equipment switch on specific vehicle years, makes, and models. It is used on 1988-2000 Chevrolet K2500 and GMC K2500 applications, 1992-2000 GMC Yukon, 1992-1999 Chevrolet K1500 Suburban and GMC K1500 Suburban, 1992-1999 Chevrolet K2500 Suburban and GMC K2500 Suburban, and other listed GM 4x4 platforms with a transfer case-mounted 2-pin connector. Additional fitments include Chevrolet Tahoe, Chevrolet Blazer, Chevrolet K3500, GMC K3500, and 1999 Cadillac Escalade with the notes shown below.

This part cross-references Standard Ignition TCA-26 for the same application.

What It Helps Fix

• Faulty transfer case switch signal
• 4WD indicator or mode selection issues tied to the switch
• Intermittent transfer case electrical communication
• Problems caused by a worn or damaged original switch
• Restoration of transfer case-mounted switch operation on GM 4x4 vehicles

Installation Notes and Tips

• Verify the vehicle uses a 2-pin connector before ordering.
• Some listed applications note that a 2-pin connector ballast is recommended.
• Confirm transfer case mounting location and connector style against the original part.
• Use the vehicle-specific fitment notes for Chevrolet K1500, Chevrolet Blazer, and 1999 Cadillac Escalade applications.

Quality Assurance

Dorman manufactures this switch as a direct replacement part for the original equipment design on the listed vehicles. Part number 600-506 is intended to match the factory-style transfer case switch configuration for the specified GM applications.