Standard Ignition TCA-13 4WD Switch

Standard Ignition TCA-13 4WD Switch

The Standard Ignition TCA-13 is a 4WD switch built for direct electrical control of the four-wheel drive actuator. It uses a black plastic housing, a female connector, and 12 male blade terminals to match the specified OE-style connection layout.

Fits 1999-2002 Chevrolet Silverado 1500, 1999-2002 GMC Sierra 1500, and other listed GM trucks and SUVs with matching 4-button 4WD control applications. This part cross-references Dorman OE Solutions 901-062 for the same application.

Key Features

• Part number: TCA-13
• 4WD switch for four-wheel drive actuator control
• Black plastic finish
• Female connector with 12 male blade terminals
• Copper alloy conductors for strong electrical conductivity and low resistive loss
• 100% tested for mechanical and electrical switching performance
• Fits select Chevrolet, GMC, Cadillac, and Yukon applications from 1999-2002

Detailed Description

Standard Ignition TCA-13 is engineered for service work where reliable 4WD switching is required. The internal conductor design uses copper alloy materials to support consistent current flow, while the switch assembly is tested to verify both mechanical action and electrical function before release. For technicians servicing GM trucks and SUVs, this 4WD switch supports direct replacement needs on listed applications including Chevrolet Silverado, Suburban, Tahoe, GMC Sierra, Yukon, and related models.

Use TCA-13 when the original 4WD selector switch no longer sends a proper signal to the actuator or when the switch face, terminals, or internal contacts show wear. The part number TCA-13 is also a useful reference when matching OE-style replacement requirements for 1999-2002 Chevrolet Silverado 1500 and 2001-2002 GMC Sierra 1500 HD applications.

What It Helps Fix

• Intermittent or inoperative 4WD mode selection
• Faulty signal transfer from the dash switch to the actuator
• Electrical contact wear inside the original switch
• Broken, loose, or damaged blade-terminal connections
• Selector issues on 4-button GM 4WD control systems

Installation Notes and Tips

Verify connector style, terminal count, and button layout before installation. Confirm the vehicle uses the listed 4WD switch configuration and compare the original part to TCA-13 for terminal orientation and housing shape. After installation, test each 4WD selection position and confirm actuator response.

Quality Assurance

Standard Ignition builds this switch with service-grade materials and validates it through mechanical and electrical testing. The design reflects long-term development focused on technician requirements and dependable switching performance.