/live/media/SI/SI_PSW146_Fro.jpg)
OE Quality
60-Day Returns
/live/media/SI/SI_PSW146_Fro.jpg)
/live/media/SI/SI_PSW146_Rig.jpg)
/live/media/SI/SI_PSW146_Oth.jpg)
/live/media/SI/SI_PSW146_Ter.jpg)
Standard IgnitionPart #: PSW146
Standard Ignition PSW146 Seat Lumbar Switch
⚙️ 182 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$23.05Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Buick, Cadillac, Chevrolet, GMC, and Hummer, Envision, CTS, Escalade, Escalade ESV, Silverado 1500, Silverado 2500, Silverado 2500 HD, Silverado 3500 HD, Tahoe, Sierra, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Yukon, Yukon XL 1500, LaCrosse, Escalade EXT, Silverado 3500, Suburban 1500, Suburban 2500, Yukon XL 2500, Lucerne, DTS, Allure, STS, Enclave, H2, and Acadia
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Seat Lumbar Switch options
Reliable Seat Lumbar Switch for Select GM Vehicles
The Standard Ignition PSW146 Seat Lumbar Switch is designed to restore lumbar support functionality in various Buick, Cadillac, Chevrolet, GMC, and Hummer models. This black plastic switch features six male blade terminals, ensuring a secure and precise electrical connection for your vehicle's seat adjustment system.
- Color: Black plastic finish for durability and aesthetic match
- Terminal Type: 6 male blade terminals for reliable connectivity
- Contents: Includes one seat lumbar switch
- Compatible with multiple GM makes and models including Cadillac Escalade, Chevrolet Silverado, GMC Sierra, Buick LaCrosse, and Hummer H2
- Part Number: PSW146 for easy identification and replacement
Durable Design and Precise Fitment
The PSW146 seat lumbar switch is engineered with a plastic finish that resists wear and tear from daily use. Its six male blade terminals provide a stable electrical interface, reducing the risk of connection issues. This switch is compatible with a wide range of GM vehicles, including the Cadillac CTS, Chevrolet Tahoe, GMC Yukon XL, Buick Enclave, and Hummer H2, making it a versatile replacement part for seat lumbar control systems.
Compatible Vehicles and Applications
This seat lumbar switch is compatible with the following makes and models:
- Buick: Allure, LaCrosse, Lucerne
- Cadillac: CTS, DTS, Escalade, Escalade ESV, Escalade EXT, STS
- Chevrolet: Acadia, Silverado 1500, Silverado 2500, Silverado 2500 HD, Silverado 3500, Silverado 3500 HD, Suburban 1500, Suburban 2500, Tahoe
- GMC: Enclave, Envision, Sierra, Sierra 1500, Sierra 2500 HD, Sierra 3500 HD, Yukon, Yukon XL 1500, Yukon XL 2500
- Hummer: H2
Common Issues Addressed by the PSW146 Seat Lumbar Switch
- Non-responsive lumbar support controls in compatible GM vehicles
- Intermittent or faulty seat lumbar adjustment due to switch failure
- Electrical connection problems caused by worn or damaged terminals
- Replacement of broken or cracked switch housing
- Restoring lumbar support functionality after accidental damage
Installation Notes and Tips
- Disconnect the vehicle battery before beginning installation to prevent electrical shorts
- Carefully remove the existing lumbar switch from the seat control panel
- Ensure the six male blade terminals align correctly with the vehicle wiring harness
- Test the switch operation before reassembling the seat panel
- Consult the vehicle’s service manual for specific removal and installation procedures
Quality Assurance and Warranty
Standard Ignition parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and fitment. The PSW146 seat lumbar switch undergoes quality control inspections to verify terminal integrity and switch functionality. Please refer to Standard Ignition’s warranty policy for coverage details on this part.
| Brand | Standard Ignition |
| Part Number | PSW146 |
| Color | Black |
| Contents | 1 Switch |
| Finish | Plastic |
| Terminal Gender | Male |
| Terminal Type | Blade |
This part fits 182 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2019 | Buick | Envision | N/A | Fits both left and right side seat lumbar switches. |
| 2019 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2018 | Buick | Envision | N/A | Fits both left and right side seat lumbar switches. |
| 2018 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2017 | Buick | Envision | N/A | Fits both left and right side seat lumbar switches. |
| 2017 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2016 | Buick | Envision | N/A | Fits both left and right side seat lumbar switches. |
| 2016 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2015 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | Cadillac | Escalade | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | Cadillac | Escalade ESV | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | Chevrolet | Silverado 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | Chevrolet | Silverado 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | Chevrolet | Silverado 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | Chevrolet | Silverado 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | Chevrolet | Tahoe | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | GMC | Sierra | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | GMC | Sierra 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | GMC | Sierra 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | GMC | Sierra 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | GMC | Yukon | N/A | Fits both left and right side seat lumbar switches. |
| 2014 | GMC | Yukon XL 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Buick | LaCrosse | N/A | Fits left side door for controlling lock mechanism. |
| 2013 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Cadillac | Escalade | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Cadillac | Escalade ESV | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Cadillac | Escalade EXT | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Chevrolet | Silverado 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Chevrolet | Silverado 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Chevrolet | Silverado 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Chevrolet | Silverado 3500 | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Chevrolet | Silverado 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Chevrolet | Suburban 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Chevrolet | Suburban 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | Chevrolet | Tahoe | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | GMC | Sierra | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | GMC | Sierra 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | GMC | Sierra 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | GMC | Sierra 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | GMC | Yukon | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | GMC | Yukon XL 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2013 | GMC | Yukon XL 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Buick | LaCrosse | N/A | Fits left side door for controlling lock mechanism. |
| 2012 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Cadillac | Escalade | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Cadillac | Escalade ESV | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Cadillac | Escalade EXT | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Chevrolet | Silverado 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Chevrolet | Silverado 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Chevrolet | Silverado 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Chevrolet | Silverado 3500 | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Chevrolet | Silverado 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Chevrolet | Suburban 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Chevrolet | Suburban 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | Chevrolet | Tahoe | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | GMC | Sierra | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | GMC | Sierra 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | GMC | Sierra 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | GMC | Sierra 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | GMC | Yukon | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | GMC | Yukon XL 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2012 | GMC | Yukon XL 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Buick | LaCrosse | N/A | Fits left side door for controlling lock mechanism. |
| 2011 | Buick | Lucerne | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Cadillac | DTS | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Cadillac | Escalade | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Cadillac | Escalade ESV | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Cadillac | Escalade EXT | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Chevrolet | Silverado 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Chevrolet | Silverado 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Chevrolet | Silverado 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Chevrolet | Silverado 3500 | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Chevrolet | Silverado 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Chevrolet | Suburban 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Chevrolet | Suburban 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | Chevrolet | Tahoe | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | GMC | Sierra | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | GMC | Sierra 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | GMC | Sierra 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | GMC | Sierra 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | GMC | Yukon | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | GMC | Yukon XL 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2011 | GMC | Yukon XL 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Buick | Allure | N/A | Fits left side door for controlling lock mechanism. |
| 2010 | Buick | LaCrosse | N/A | Fits left side door for controlling lock mechanism. |
| 2010 | Buick | Lucerne | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Cadillac | DTS | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Cadillac | Escalade | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Cadillac | Escalade ESV | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Cadillac | Escalade EXT | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Cadillac | STS | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Chevrolet | Silverado 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Chevrolet | Silverado 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Chevrolet | Silverado 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Chevrolet | Silverado 3500 | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Chevrolet | Silverado 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Chevrolet | Suburban 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Chevrolet | Suburban 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | Chevrolet | Tahoe | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | GMC | Sierra | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | GMC | Sierra 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | GMC | Sierra 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | GMC | Sierra 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | GMC | Yukon | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | GMC | Yukon XL 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2010 | GMC | Yukon XL 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Buick | Enclave | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Buick | Lucerne | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Cadillac | CTS | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Cadillac | DTS | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Cadillac | Escalade | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Cadillac | Escalade ESV | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Cadillac | Escalade EXT | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Cadillac | STS | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Chevrolet | Silverado 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Chevrolet | Silverado 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Chevrolet | Silverado 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Chevrolet | Silverado 3500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Chevrolet | Silverado 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Chevrolet | Suburban 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Chevrolet | Suburban 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Chevrolet | Tahoe | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | GMC | Sierra | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | GMC | Sierra 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | GMC | Sierra 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | GMC | Sierra 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | GMC | Yukon | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | GMC | Yukon XL 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | GMC | Yukon XL 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2009 | Hummer | H2 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Buick | Enclave | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Buick | Lucerne | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Cadillac | DTS | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Cadillac | Escalade | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Cadillac | Escalade ESV | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Cadillac | Escalade EXT | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Cadillac | STS | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Chevrolet | Silverado 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Chevrolet | Silverado 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Chevrolet | Silverado 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Chevrolet | Silverado 3500 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Chevrolet | Silverado 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Chevrolet | Suburban 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Chevrolet | Suburban 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Chevrolet | Tahoe | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | GMC | Acadia | N/A | Fits left side door for controlling lock mechanism. |
| 2008 | GMC | Sierra | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | GMC | Sierra 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | GMC | Sierra 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | GMC | Sierra 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | GMC | Yukon | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | GMC | Yukon XL 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | GMC | Yukon XL 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2008 | Hummer | H2 | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Buick | Lucerne | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Cadillac | DTS | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Cadillac | Escalade | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Cadillac | Escalade ESV | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Cadillac | Escalade EXT | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Cadillac | STS | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Chevrolet | Silverado 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Chevrolet | Silverado 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Chevrolet | Silverado 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Chevrolet | Silverado 3500 | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Chevrolet | Silverado 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Chevrolet | Suburban 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Chevrolet | Suburban 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | Chevrolet | Tahoe | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | GMC | Acadia | N/A | Fits left side door for controlling lock mechanism. |
| 2007 | GMC | Sierra | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | GMC | Sierra 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | GMC | Sierra 2500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | GMC | Sierra 3500 HD | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | GMC | Yukon | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | GMC | Yukon XL 1500 | N/A | Fits both left and right side seat lumbar switches. |
| 2007 | GMC | Yukon XL 2500 | N/A | Fits both left and right side seat lumbar switches. |
| 2006 | Buick | Lucerne | N/A | Fits both left and right side seat lumbar switches. |
| 2006 | Cadillac | DTS | N/A | Fits both left and right side seat lumbar switches. |
| 2005 | Cadillac | STS | N/A | Fits both left and right side seat lumbar switches. |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
157854081S12378PA3804STW146SW9442
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.