Standard Ignition TCA-31 4WD Switch

OE-Style 4WD Selector Switch

The Standard Ignition TCA-31 is a direct-fit four wheel drive selector switch for vehicles equipped with the matching factory-style white lettering. It is built with a black plastic finish, female connectors, male blade terminals, and the terminal layout needed for a straightforward electrical replacement.

For Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, and Yukon XL 4WD systems, this switch restores driver control at the dash with an OE replacement fit and factory-style connection points.

Key Features

• Direct-fit OE replacement for the 4WD selector switch
• Black plastic finish for factory-style appearance
• Female connector ends with male blade terminals
• Terminal layout: 8 and 4 blade terminals
• Built from materials intended to handle demanding operating conditions
• Individually tested for electrical reliability
• Standard Ignition TCA-31 application-specific replacement

Detailed Description

Standard Ignition TCA-31 is a replacement 4WD switch engineered for vehicles that use the white-lettering dash switch configuration. It is a practical choice for restoring selector function on 2001-2002 Chevrolet Silverado 1500, Silverado 1500 HD, Silverado 2500, Silverado 2500 HD, Silverado 3500, Suburban 1500, Suburban 2500, Tahoe, GMC Sierra 1500, Sierra 1500 HD, Sierra 2500, Sierra 2500 HD, Sierra 3500, Yukon XL 1500, Yukon XL 2500, and 1998-1999 GMC K1500 Suburban and K2500 Suburban applications. The TCA-31 is also a cross-reference to Dorman OE Solutions 901-162 for the same application.

What It Helps Fix

• Inoperative or intermittent 4WD selector switch response
• Dash switch failure that prevents proper transfer case engagement
• Broken or worn electrical contacts inside the selector switch
• Factory-style switch replacement needs on GM trucks and SUVs
• Electrical issues tied to damaged blade terminals or connector wear

Installation Notes and Tips

Verify the vehicle uses the white-lettering switch configuration before ordering. Confirm connector style, terminal count, and dash switch layout against the original part. Fits 2001-2002 Chevrolet Silverado 1500, 2001-2002 Chevrolet Silverado 1500 HD, 2001-2002 Chevrolet Silverado 2500, 2001-2002 Chevrolet Silverado 2500 HD, 2001-2002 Chevrolet Silverado 3500, 2001-2002 Chevrolet Suburban 1500, 2001-2002 Chevrolet Suburban 2500, 2001-2002 Chevrolet Tahoe, 2001-2002 GMC Sierra 1500, 2001-2002 GMC Sierra 1500 HD, 2001-2002 GMC Sierra 2500, 2001-2002 GMC Sierra 2500 HD, 2001-2002 GMC Sierra 3500, 2001-2002 GMC Yukon XL 1500, 2001-2002 GMC Yukon XL 2500, 1998-1999 GMC K1500 Suburban, and 1998-1999 GMC K2500 Suburban.

Quality Assurance

Standard Ignition manufactures aftermarket electrical components with in-process quality control and testing throughout production. The TCA-31 is built as an OE-style replacement intended to meet the demands of daily use in 4WD-equipped Chevrolet and GMC trucks and SUVs.