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Standard Ignition TCA-47 4WD Switch
| Brand | Standard Ignition TCA-47 |
|---|---|
| Color | Black |
| Connector Gender | Female; Female |
| Connector Shape | Rectangular |
| Contents | Switch |
| Finish | Plastic |
| Terminal Gender | Male |
| Terminal Type | Blade |
| Fits | Cadillac, Chevrolet, and GMC · 22 vehicles |
OE direct replacement. Restores function with a direct-fit electrically operated switch.
Copper alloy conductors. Deliver strong conductivity with low resistive losses.
OE spec construction. Built to match proper fit, form, and function.
Cross-references Dorman - OE Solutions 901-072, 1S11004 and 53-20741 for the same application. See all 10.
Standard Ignition TCA-47 4WD Switch
The Standard Ignition TCA-47 is a direct-fit 4WD switch for restoring four-wheel drive operation when the original unit is damaged or no longer responds correctly. Built to OE specifications, it uses copper alloy conductors for strong electrical conductivity and low resistive loss.
Compatible with select Cadillac Escalade, Chevrolet Avalanche, Silverado, Tahoe, and GMC Sierra, Yukon, and Yukon XL applications, this electrically operated switch is made for proper fit, form, and function in the factory location.
Key Features
- Direct-fit replacement 4WD switch
- OE-spec construction for proper fit and function
- Copper alloy conductors for reliable electrical transfer
- Black plastic finish
- 2 female connectors, rectangular shape
- 12 male blade terminals
- Standard Ignition TCA-47 part number for easy identification
Detailed Description
The TCA-47 is an electrically operated four wheel drive switch designed to replace worn or damaged original equipment units. Its OE-style construction supports consistent signal transfer to the transfer case control system, while the copper alloy conductor design helps reduce electrical resistance. This makes it a practical replacement for 2003-2006 Chevrolet Avalanche 1500 and Avalanche 2500 models with the 4 Position setup, as well as 2005-2006 Chevrolet Silverado 1500 and GMC Sierra 1500 applications with an automatic shift transfer case. It also fits 2005-2006 Cadillac Escalade and Tahoe, plus 2005-2006 GMC Yukon and 2005 GMC Yukon XL 1500 with the listed switch configurations.
This part cross-references Dorman - OE Solutions 901-072 for the same application.
What It Is Used For
- Restoring 4WD switch response when the original switch fails
- Correcting intermittent transfer case selection issues
- Replacing a cracked, worn, or non-functioning dashboard switch
- Addressing electrical contact problems in the 4WD control circuit
- Returning factory-style operation to the 4WD selector interface
Installation Notes and Tips
Verify connector style, terminal count, and vehicle configuration before installation. This switch uses 2 female connectors, a rectangular housing, and 12 male blade terminals, so matching the OE connector layout is important for proper installation. Confirm the vehicle’s transfer case and switch style against the listed fitment before replacing the original unit.
Quality Assurance
Standard Ignition builds this switch to OE specifications using durable materials selected for service use. The design is intended to match original fit, form, and function for the listed Cadillac, Chevrolet, and GMC applications.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2006 | Cadillac | Escalade | — | — | — | N/A | — |
| 2006 | Chevrolet | Avalanche 1500 | — | — | — | N/A | 4 Position |
| 2006 | Chevrolet | Avalanche 2500 | — | — | — | N/A | 4 Position |
| 2006 | Chevrolet | Silverado 1500 | 5.3L | V8 | ELECTRIC/GAS | N/A | w/ automatic shift transfer case |
| 2006 | Chevrolet | Silverado 1500 HD | — | — | — | N/A | — |
| 2006 | Chevrolet | Tahoe | — | — | — | N/A | — |
| 2006 | GMC | Sierra 1500 | 5.3L | V8 | ELECTRIC/GAS | N/A | w/ automatic shift transfer case |
| 2006 | GMC | Yukon | — | — | — | N/A | w/ automatic shift transfer case |
| 2005 | Cadillac | Escalade | — | — | — | N/A | — |
| 2005 | Chevrolet | Avalanche 1500 | — | — | — | N/A | 4 Position |
| 2005 | Chevrolet | Avalanche 2500 | — | — | — | N/A | 4 Position |
| 2005 | Chevrolet | Silverado 1500 | 5.3L | V8 | ELECTRIC/GAS | N/A | w/ automatic shift transfer case |
| 2005 | Chevrolet | Silverado 1500 HD | — | — | — | N/A | — |
| 2005 | Chevrolet | Tahoe | — | — | — | N/A | — |
| 2005 | GMC | Sierra 1500 | 5.3L | V8 | ELECTRIC/GAS | N/A | w/ automatic shift transfer case |
| 2005 | GMC | Yukon | — | — | — | N/A | w/ automatic shift transfer case |
| 2005 | GMC | Yukon XL 1500 | — | — | — | N/A | 4 Button Switch |
| 2004 | Chevrolet | Avalanche 1500 | — | — | — | N/A | 4 Position |
| 2004 | Chevrolet | Avalanche 2500 | — | — | — | N/A | 4 Position |
| 2004 | GMC | Sierra 1500 | — | — | — | N/A | 4 Button Switch |
| 2003 | Chevrolet | Avalanche 1500 | — | — | — | N/A | 4 Position |
| 2003 | Chevrolet | Avalanche 2500 | — | — | — | N/A | 4 Position |
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