Standard Ignition TCA108 4WD Switch

OE Replacement 4WD Selector Switch

Standard Ignition TCA108 is a direct-fit 4WD switch for vehicles equipped with a four-wheel drive selector system. Built with a black plastic finish and a 12-pin male terminal layout, it is made for straightforward replacement of the original switch in the dash or control interface.

Compatible with 2007 Cadillac Escalade, 2007 Chevrolet Silverado 1500, and 2007 GMC Sierra 1500 applications, this switch supports reliable transfer case selection when the original unit is worn or unresponsive. Standard Ignition TCA108 is also cross-referenced to OE-style part numbers for the same application.

Key Features

• Direct-fit OE replacement 4WD switch
• Black plastic housing for a factory-style appearance
• 12-pin male pin terminals for the specified connector style
• Built with materials selected to handle demanding operating conditions
• Individually tested for functional reliability
• Fits 2007 Cadillac Escalade, 2007 Chevrolet Tahoe, and 2007 GMC Yukon applications

Detailed Description

The Standard Ignition TCA108 four wheel drive selector switch is engineered for vehicles that use an electronic 4WD control switch. It is a direct replacement for the original component, helping restore normal transfer case selection on 2007 Cadillac Escalade, Escalade ESV, and Escalade EXT, plus 2007 Chevrolet Avalanche, Silverado 1500, Suburban 1500, Suburban 2500, and Tahoe, along with 2007 GMC Sierra 1500, Yukon, Yukon XL 1500, and Yukon XL 2500. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Fix

• Inoperative or intermittent 4WD selector switch operation
• Difficulty switching between 2WD and 4WD modes
• Worn, cracked, or damaged factory switch assemblies
• Electrical contact issues at the dash switch connector
• Loss of normal transfer case mode selection on supported GM trucks and SUVs

Installation Notes and Tips

Verify connector style, terminal count, and vehicle application before installation. This switch uses a 12-terminal male pin configuration and is intended for the listed 2007 Cadillac, Chevrolet, and GMC models. Compare the original switch to the replacement part number TCA108 before installation to confirm proper fitment.

Quality Assurance

Standard Ignition states that this 4WD switch is manufactured with complete quality control throughout production and is tested for reliability. The part is built as an OE replacement to support consistent operation in demanding automotive environments.