Dorman 600-503 Transfer Case Switch

Transfer Case Switch for GM 4x4 Applications

This Dorman transfer case switch is a direct replacement for the original equipment switch used on select Chevrolet and GMC 4x4 trucks and SUVs. It is built for vehicles with a 2-pin connector and axle-mounted applications, including models with axle codes ZWF, ZWG, or ZWH.

Key Features

• Direct replacement transfer case switch for select GM applications
• Blade terminals with 2-terminal electrical connection
• Wiring harness included for a cleaner repair
• Supplied as a switch assembly for transfer case service
• Matches OE-style fitment for 1996-1997 Chevrolet and GMC 4x4 models

Detailed Description

Dorman 600-503 is a transfer case switch made to replace the original switch on specific Chevrolet C1500 Suburban, C2500 Suburban, K1500 Suburban, K2500, K2500 Suburban, K3500, Tahoe, GMC C1500 Suburban, C2500 Suburban, K1500 Suburban, K2500, K2500 Suburban, K3500, and Yukon applications. It uses blade terminals, a 2-terminal layout, and includes the wiring harness needed for the listed configurations. This part cross-references Standard Ignition TCA-5 for the same application.

What This Part Helps Fix

• Transfer case switch failure causing 4x4 engagement problems
• Intermittent or inaccurate transfer case signal output
• Electrical connection issues at the axle-mounted switch
• Warning lights or drivability concerns tied to transfer case switching
• Replacement needs on GM 4x4 trucks and SUVs with a 2-pin connector

Installation Notes and Tips

Verify axle code and connector style before ordering. This switch is specified for axle-mounted applications with ZWF, ZWG, or ZWH axle codes on the listed Chevrolet and GMC models, and for Tahoe and Yukon applications with a 2-pin connector. Confirm the original connector, terminal style, and mounting location match the vehicle before installation.

Quality Assurance

Dorman manufactures replacement parts to directly replace original equipment components on select vehicle years, makes, and models. Part number 600-503 is built for the listed GM fitments and OE-style service replacement use.