Standard Ignition TCA-36 4WD Switch

OE-Style 4WD Selector Switch

The Standard Ignition TCA-36 is a direct-fit four wheel drive selector switch for vehicles with an automatic shift transfer case. It is built with a black plastic finish and OE-style blade terminals for straightforward replacement in the dash or control interface.

Key Features

• Direct-fit OE replacement for the factory 4WD switch
• Black plastic construction for a factory-style appearance
• Female connector ends with male blade terminals
• Terminal layout: 8 and 3 blade terminals
• Contents: Four Wheel Actuator Switch
• Built from materials selected to handle demanding operating conditions
• Individually tested for electrical reliability

Fitment and Application

• Fits 1999-2000 Cadillac Escalade, w/ automatic shift transfer case
• Fits 1998-2000 Chevrolet K2500, w/ automatic shift transfer case
• Fits 1999-2000 Chevrolet K3500, w/ automatic shift transfer case
• Fits 1998-2000 GMC K2500, w/ automatic shift transfer case
• Fits 1998-1999 Chevrolet K1500, w/ automatic shift transfer case
• Fits 1998-1999 Chevrolet K1500 Suburban, w/ automatic shift transfer case
• Fits 1998-1999 Chevrolet K2500 Suburban, w/ automatic shift transfer case
• Fits 1998-1999 Chevrolet Tahoe, w/ automatic shift transfer case
• Fits 1998-1999 GMC K1500, w/ automatic shift transfer case
• Fits 1998-1999 GMC K1500 Suburban, w/ automatic shift transfer case
• Fits 1998-1999 GMC K2500 Suburban, w/ automatic shift transfer case
• Fits 1998-1999 GMC Yukon, w/ Auto Shift Transfer Case; Mounted Horizontally

Common Problems This Part Can Address

• Inoperative 4WD mode selection
• Intermittent transfer case switch response
• Dashboard switch failure or worn contacts
• Difficulty engaging or changing four wheel drive settings
• Electrical issues related to the selector switch circuit

Installation Notes and Tips

Verify the vehicle uses an automatic shift transfer case before ordering. Match the connector style, terminal count, and mounting orientation to the original switch, especially on 1998-1999 GMC Yukon applications where the switch is mounted horizontally. Standard Ignition TCA-36 also cross-references Dorman OE Solutions 901-130 for the same application.

Quality Assurance

Standard Ignition manufactures this 4WD switch with complete quality control throughout production. The part is tested for reliability and built to meet the demands of everyday and severe operating conditions.