Standard Ignition PSW146 Seat Lumbar Switch

OE-Style Seat Lumbar Switch Replacement

Restore seat lumbar control with this Standard Ignition seat lumbar switch, part number PSW146. It is a direct-fit electrical replacement for damaged OE switches and is built to OE specifications for proper fit, form, and function in supported Buick, Cadillac, Chevrolet, and GMC applications.

Standard Ignition PSW146 uses copper alloy conductors for strong electrical conductivity and low resistive loss. The black plastic housing, male blade terminals, and 6-terminal layout are engineered for service replacement in vehicles such as the Chevrolet Silverado 1500, GMC Sierra 1500, and Cadillac Escalade.

Key Features

• Direct-fit seat lumbar switch replacement
• OE-spec design for proper fit, form, and function
• Copper alloy conductors for efficient electrical transfer
• Black plastic finish for a factory-style appearance
• Male blade terminals with 6-terminal configuration
• Built for supported left and right seat lumbar switch applications

Detailed Product Overview

Standard Ignition PSW146 is a replacement seat lumbar switch for vehicles that use an electrically operated lumbar control. It is made to match OE requirements so the switch installs in the intended location and restores normal seat lumbar operation after the original unit becomes worn, damaged, or unresponsive. This part cross-references STW146 and SW9442 for the same application.

Compatible With 2007-2014 Chevrolet Silverado 1500, 2007-2014 GMC Sierra 1500, and 2007-2014 Cadillac Escalade seat lumbar switch applications, as well as additional Buick, Cadillac, Chevrolet, GMC, and Hummer models listed in the fitment data. PSW146 is also referenced for 2016-2019 Buick Envision and 2009-2019 Cadillac CTS applications.

Common Problems This Part Can Help Solve

• Seat lumbar switch does not respond when pressed
• Intermittent lumbar adjustment operation
• Broken, cracked, or worn switch face
• Electrical contact loss at the switch terminals
• Restoring factory seat lumbar control after OE switch failure

Installation Notes and Tips

Verify connector style, terminal count, and vehicle fitment before installation. This switch uses male blade terminals and a 6-terminal layout, so matching the original connector is important for proper operation. Confirm the application by year, make, and model, especially on vehicles such as the Buick Lucerne, Cadillac DTS, Chevrolet Suburban, and GMC Yukon.

Quality Assurance

Standard Ignition manufactures this switch to OE specification using robust materials intended to meet the demands of professional service replacement. The design focuses on correct electrical performance and factory-style fit for supported applications.