Equipment group 1SB, base LaCrosse

Years 2007–09, 2012–19, 2025–26 Models 8 Factory citations 16

Also described as Package, option 02Equipment group 1SBEquipment group, PreferredEquipment group 1SB, PreferredTrim group, Verano base, Canada

Also documented for Cadillac Chevrolet GMC Pontiac Saturn

Documented applications

Enclave — Lambda / GMT967 (2008–2017)

2008–2009 Factory-verified

generic wording in a list GM shared with other nameplates.

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

Encore — Gamma II (2013–2022)

2013–2014, 2018–2019 Factory-verified

2013–2014: the entry Encore (NICB calls the series Base); 2018–2019: Preferred; column heading of the guides; the 2013 color and trim page pairs it with 1SD for the cloth seats

GM factory document — 2013 buick encore fleet order guide wayback, p.1.
GM factory document — 2014 buick encore fleet order guide wayback, p.2.
GM factory document — 2018 buick encore order guide copy gm authority, p.1.
GM factory document — 2019 buick encore order guide copy gm authority, p.1.

Encore GX — VSS-F (2020–2027)

2025–2026 Factory-verified

trim group heading of the Preferred columns (FWD and AWD)

GM factory document — 2025 buick encore gx fleet order guide, p.1.
GM factory document — 2026 buick encore gx fleet order guide, p.1.

LaCrosse — E2XX, 3rd gen (2017–2019)

2017–2019 Factory-verified

GM factory document — 2017 buick lacrosse fleet order guide wayback, p.1.
GM factory document — 2018 buick lacrosse order guide copy gm authority, p.1.
GM factory document — 2019 buick lacrosse order guide copy gm authority, p.1.

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

2012, 2015–2016 Factory-verified

FWD; replaced the CX for 2012 (GM Authority 2012 RPO list); LFX standard for 2016 (GM Authority 2016 changes)

GM factory document — 2015 buick lacrosse fleet order guide wayback, p.1, p.2.
2013 Single-source

FWD; took the 1SD content for 2013 (GM Authority 2013 changes); single-source for 2013: GM Authority 2013 changes does not credit GM

Regal — E2XX (2018–2020)

2018–2019 Factory-verified

Sportback model 4ZW68 FWD; TourX model 4ZW35 AWD

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.2.
GM factory document — 2018 buick regal tourx fleet order guide wayback, p.2.
GM factory document — 2019 buick regal sportback fleet order guide wayback, p.1.

Terraza — U-body / GMT201 (2005–2007)

2007 Factory-verified

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

Verano — Delta II (2012–2017)

2015 Single-source

only in: Canada; printed only by the NICB VIN manuals (2015 p.38, 2016 p.41), no GM list

This page aggregates every documented appearance of 1SB in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.