Standard Ignition TCA-41 4WD Switch

OE-Style 4WD Selector Switch

The Standard Ignition TCA-41 is a direct-fit four wheel drive selector switch for vehicles equipped with an electronic 4WD control system. Built with a black plastic finish, a rectangular female connector, and 11 male blade terminals, it is made to match the original switch layout for straightforward replacement.

Compatible With Chevrolet Trailblazer, GMC Envoy, Isuzu Ascender, Trailblazer EXT, Envoy XL, and Envoy XUV applications that use this OE-style switch configuration.

Key Features

• Direct-fit OE replacement for the factory 4WD selector switch
• Black plastic finish for a factory-style appearance
• Rectangular female connector with 11 male blade terminals
• Built from high-quality materials for demanding operating conditions
• Individually tested for electrical reliability and consistent function
• Standard Ignition TCA-41 replacement switch for 4WD control systems

Detailed Description

The Standard Ignition TCA-41 4WD switch is engineered for vehicles that rely on an electronic selector to engage four wheel drive. Its OE-style design supports a clean replacement in the dash or control interface, while the connector and terminal layout are matched to the original application for proper fitment. This part is commonly selected for Chevrolet Trailblazer and GMC Envoy service, as well as Isuzu Ascender and related platform variants.

This part cross-references Dorman OE Solutions 901-064 for the same application. The TCA-41 is also referenced by part numbers such as 1S7504 and 53-20726 in interchange listings.

What It Helps Address

• Intermittent or non-responsive 4WD selector operation
• Broken, worn, or faded factory switch controls
• Electrical connection issues at the dash switch interface
• Restoring 4WD mode selection on Trailblazer and Envoy models
• Replacing a damaged switch with an OE-style electrical component

Installation Notes and Tips

Verify connector shape, terminal count, and switch style before installation. The TCA-41 uses a rectangular female connector with 11 male blade terminals, so matching the original harness and dash opening is important for proper installation. Confirm vehicle year and model against the fitment list before ordering, especially on Chevrolet Trailblazer, GMC Envoy, and Isuzu Ascender applications.

• Fits 2008-2009 Chevrolet Trailblazer, N/A
• Fits 2002-2006 Chevrolet Trailblazer, N/A
• Fits 2008-2009 GMC Envoy, N/A
• Fits 2002-2006 GMC Envoy, N/A
• Fits 2008 Isuzu Ascender, N/A
• Fits 2003-2006 Isuzu Ascender, N/A
• Fits 2002-2006 Chevrolet Trailblazer EXT, N/A
• Fits 2002-2006 GMC Envoy XL, N/A
• Fits 2004-2005 GMC Envoy XUV, N/A

Quality Assurance

Standard Ignition states that this selector switch is manufactured with complete quality control throughout the production process and undergoes extensive testing to support reliable operation. The TCA-41 is built as a direct-fit OE replacement for consistent service on the listed applications.