KA1 Factory-verified

Buick · Regular Production Option

Seats, heated driver and front passenger

Years 1998–09, 2012, 2014–19, 2022–23, 2025–27 Models 25 Factory citations 74

Also described as Seats, heated, driver and front passengerHeater, seatHeater, seat, frontHeated seatSeats, heated driver and front passenger, 3 settings, activates on remote start at 45 degrees or below

Also documented for Cadillac Chevrolet GMC Hummer Oldsmobile Pontiac Saturn

Documented applications

Cascada — Delta II (2016–2019)

2016–2019 Factory-verified

all trims: S

GM factory document — 2016 buick cascada order guide copy gm authority, p.2, p.6.
GM factory document — 2017 buick cascada order guide copy gm authority, p.3, p.12.
GM factory document — 2018 buick cascada order guide copy gm authority, p.2, p.12.
GM factory document — 2019 buick cascada order guide copy gm authority, p.2, p.12.

Century — W-body (1997–2005)

1998–2004 Factory-verified

GM factory document — 1998 buick century rpo code list, p.1.
GM factory document — 1999 buick century rpo code list, p.1.
GM factory document — 2000 buick century rpo code list, p.1.
GM factory document — 2001 buick century rpo code list, p.1.
GM factory document — 2002 buick century rpo code list, p.1.
GM factory document — 2003 buick century rpo code list, p.1.
GM factory document — 2004 buick century rpo code list, p.1.

Enclave — C1XX (2018–2024)

2018, 2022–2023 Factory-verified

S on all trims

GM factory document — 2018 buick enclave fleet order guide wayback, p.1.
GM factory document — 2022 buick enclave order guide copy nhtsa docket, p.6, p.23.
GM factory document — 2023 buick enclave order guide copy autoevolution wayback, p.5, p.22.

Enclave — Lambda / GMT967 (2008–2017)

2008–2009 Factory-verified

GM factory document — 2008 buick enclave rpo code list, p.1.
GM factory document — 2009 buick enclave rpo code list, p.1.

Enclave — VSS-S (2025–2027)

2025–2027 Factory-verified

S on all trims

GM factory document — 2025 buick all new enclave fleet order guide, p.4.
GM factory document — 2026 buick enclave fleet order guide, p.5.
GM factory document — 2027 buick enclave fleet order guide, p.5.

Encore — Gamma II (2013–2022)

2014, 2018–2019 Factory-verified

2014: Leather, Premium: S; 2018: Essence, Premium: S; 2019: Essence: S

GM factory document — 2014 buick encore fleet order guide wayback, p.2.
GM factory document — 2018 buick encore order guide copy gm authority, p.4, p.18.
GM factory document — 2019 buick encore order guide copy gm authority, p.3, p.16.

Encore GX — VSS-F (2020–2027)

2025–2027 Factory-verified

Preferred, Sport Touring: O; Avenir: S

GM factory document — 2025 buick encore gx fleet order guide, p.5.
GM factory document — 2026 buick encore gx fleet order guide, p.5.
GM factory document — 2027 buick encore gx fleet order guide, p.5.

Envision — D2XX, imported from China (2016–2020)

2016–2019 Factory-verified

all trims: S

GM factory document — 2016 buick envision order guide copy gm authority, p.3, p.13.
GM factory document — 2017 buick envision order guide copy gm authority, p.4, p.16.
GM factory document — 2018 buick envision order guide copy gm authority, p.4, p.16.
GM factory document — 2019 buick envision order guide copy gm authority, p.5, p.18.

Envision — E2XX (2021–2027)

2025–2027 Factory-verified

2027: Preferred, Sport Touring: O; Avenir: S

GM factory document — 2025 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2027 buick envision fleet order guide rpo codes, p.1.
GM factory document — 2027 buick envision fleet order guide, p.4.

Envista — VSS-F (2024–2027)

2025–2026 Factory-verified

Preferred, Sport Touring: O; Avenir: S

GM factory document — 2025 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2025 buick envista fleet order guide, p.3.
GM factory document — 2026 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2026 buick envista fleet order guide, p.3.

LaCrosse — E2XX, 3rd gen (2017–2019)

2017–2019 Factory-verified

2019: Sport Touring, Essence, Premium, Avenir: S

GM factory document — 2017 buick lacrosse fleet order guide wayback, p.2.
GM factory document — 2018 buick lacrosse order guide copy gm authority, p.3.
GM factory document — 2019 buick lacrosse order guide copy gm authority, p.4.

LaCrosse — Epsilon II, 2nd gen (2010–2016)

2012, 2015 Factory-verified

2015: 1SL, 1SP, 1SR: S; 2012: part of PCP (GM Authority 2012 RPO list)

GM factory document — 2015 buick lacrosse fleet order guide wayback, p.2.

LaCrosse — W-body / GMX365 (2005–2009)

2005–2009 Factory-verified

GM factory document — 2005 buick lacrosse rpo code list, p.1.
GM factory document — 2007 buick lacrosse rpo code list, p.1.
GM factory document — 2009 buick lacrosse rpo code list, p.1.

LeSabre — H-body (2000–2005)

2000–2005 Factory-verified

GM factory document — 2000 buick lesabre rpo code list, p.1.
GM factory document — 2005 buick lesabre rpo code list, p.1.

Lucerne — G-body (2006–2011)

2006–2009 Factory-verified

GM factory document — 2006 buick lucerne rpo code list, p.1.
GM factory document — 2009 buick lucerne rpo code list, p.1.

Park Avenue — G-body (1997–2005)

1998–2005 Factory-verified

GM factory document — 1998 buick park avenue rpo code list, p.1.
GM factory document — 2005 buick park avenue rpo code list, p.1.

Rainier — GMT360 (2004–2007)

2004–2007 Factory-verified

GM factory document — 2004 buick rainier 2wd rpo code list, p.1.
GM factory document — 2007 buick rainier rpo code list, p.1.

Regal — E2XX (2018–2020)

2018–2019 Factory-verified

2019: Essence, Avenir, GS: S (2019 Sportback order guide)

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
GM factory document — 2019 buick regal sportback order guide copy gm authority, p.4.

Regal — Epsilon II, 5th gen (2011–2017)

2016 Factory-verified

2016: all groups: S

GM factory document — 2016 buick regal order guide copy gm authority, p.3, p.18.

Regal — W-body (1997–2004)

1998–2004 Factory-verified

Wikipedia lists heated leather seats for the Regal

GM factory document — 1998 buick regal rpo code list, p.1.
GM factory document — 1999 buick regal rpo code list, p.1.
GM factory document — 2000 buick regal rpo code list, p.1.
GM factory document — 2001 buick regal rpo code list, p.1.
GM factory document — 2002 buick regal rpo code list, p.1.
GM factory document — 2003 buick regal rpo code list, p.1.
GM factory document — 2004 buick regal rpo code list, p.1.

Rendezvous — U-body / GMT257 (2002–2007)

2002–2007 Factory-verified

The 2002 list reads "Heated Seats".

GM factory document — 2002 buick rendezvous awd rpo code list, p.1.
GM factory document — 2003 buick rendezvous awd rpo code list, p.1.
GM factory document — 2006 buick rendezvous awd rpo code list, p.1.
GM factory document — 2007 buick rendezvous fwd rpo code list, p.1.

Riviera — G-body (1995–1999)

1998–1999 Factory-verified

GM factory document — 1998 buick riviera rpo code list, p.1.
GM factory document — 1999 buick riviera rpo code list, p.1.

Skylark — N-body (1992–1998)

1998 Factory-verified

GM factory document — 1998 buick skylark rpo code list, p.1.

Terraza — U-body / GMT201 (2005–2007)

2005–2007 Factory-verified

GM factory document — 2005 buick terraza rpo code list, p.1.
GM factory document — 2006 buick terraza rpo code list, p.1.
GM factory document — 2007 buick terraza rpo code list, p.1.

Verano — Delta II (2012–2017)

2012, 2016 Factory-verified

2016: 1SD: O (within PCM); not on 1SV; 2012: 1SL: S (GM 2012 ordering guide)

GM factory document — 2016 buick verano fleet order guide wayback, p.2.
GM factory document — 2012 buick verano online ordering guide copy gm authority, p.3.

This page aggregates every documented appearance of KA1 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.