Equipment group, SLT

Years 2008–09, 2014–27 Models 12 Factory citations 42

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Also described as Package, SLT option 1Trim group, SLTEquipment group 4SA, SLTTrim group, Elevation

Documented applications

Acadia — first generation, Lambda (2007–2017)

2008–2009, 2014–2016 Factory-verified

2014–2016 guides: equipment group SLT-1.

GM factory document — 2008 gmc acadia 2wd rpo code list, p.1.
GM factory document — 2009 gmc acadia 2wd rpo code list, p.1.
GM factory document — 2014 gmc acadia fleet order guide wayback, p.1.
GM factory document — 2015 gmc acadia fleet order guide wayback, p.1.
GM factory document — 2016 gmc acadia fleet order guide wayback, p.1.

Acadia — Second generation (C1XX) (2017–2023)

2017–2021 Factory-verified

SLT-1 in the 2017–2019 guides; the SLT from 2020; 2020: GM Authority 2020 Acadia page; 2021: GM Authority 2021 Acadia page

GM factory document — 2017 gmc acadia order guide copy gm authority, p.1, p.29.
GM factory document — 2018 gmc acadia order guide copy gm authority, p.1, p.37.
GM factory document — 2019 gmc acadia order guide copy gm authority, p.1, p.39.

Sierra HD — K2XX (2015–2019)

2018–2019 Factory-verified

the 2015 guides and the 2019 Wayback capture print it only with a footnote digit attached (4SA1, 4SA3), so 2015 is not claimed and 2019 rests on the 3500HD order guide, which prints it cleanly on its 4SA color and trim page; 2018: GM's 2018 Sierra 2500HD order guide, same page layout

GM factory document — 2018 gmc sierra 2500hd order guide copy gm authority, p.59.
GM factory document — 2019 gmc sierra 3500hd order guide copy gm authority, p.56.

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

only in: 2500 HD and 3500 HD pickup

GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.1.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.1.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.1.

Sierra — K2XX (2014–2019)

2016, 2018 Factory-verified

the 2016 guide limits it to Crew Cab and Double Cab; the 2014 guide prints the code only run together with a footnote digit (4SA1), so 2014 is not claimed.

GM factory document — 2016 gmc sierra 1500 fleet order guide wayback, p.2.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.3.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified

the upfitter lists read "Package, SLT option 1"

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.9.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.9.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.10.
GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.9.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.10.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.8.
GM factory document — 2025 gmc sierra 1500 retail and fleet fleet order guide, p.168, p.169.
GM factory document — 2026 gmc sierra 1500 retail and fleet fleet order guide, p.85, p.86.

Terrain — First generation (2010–2017)

2016–2017 Factory-verified

models TLJ26 (FWD) and TLM26 (AWD)

GM factory document — 2016 gmc terrain fleet order guide wayback, p.2.
GM factory document — 2017 gmc terrain fleet order guide wayback, p.2.

Terrain — Second generation (D2XX) (2018–2024)

2019 Factory-verified

FWD and AWD models (TXM26, TXC26)

GM factory document — 2019 gmc terrain order guide copy gm authority, p.1, p.47.

Yukon — K2XX (2015–2020)

2015–2016, 2018–2019 Factory-verified

the guides' SLT column; NICB lists SLT for 2015–2020; 2018 from GM's 2018 Yukon order guide

GM factory document — 2015 gmc yukon denali fleet order guide wayback, p.2.
GM factory document — 2016 gmc yukon denali fleet order guide wayback, p.2.
GM factory document — 2019 gmc yukon denali fleet order guide wayback, p.1.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.1.
2020 Single-source

GM Authority's 2020 Yukon page (trim groups); no factory list or order guide read for 2020; the page does not credit GM for its codes

Yukon — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

the body-builder lists name it SLT option 1

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.9.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.9.
GM factory document — 2025 gmc new yukon denali fleet order guide, p.1.
GM factory document — 2026 gmc yukon denali fleet order guide, p.1.
GM factory document — 2027 gmc yukon fleet order guide, p.1.

Yukon XL — K2XX (2015–2020)

2015–2016 Factory-verified

the guides head the SLT column with 4SA

GM factory document — 2015 gmc yukon xl denali fleet order guide wayback, p.2.
GM factory document — 2016 gmc yukon xl denali fleet order guide wayback, p.2.
2019 Single-source

GM Authority's 2019 Yukon page, which covers the Yukon and Yukon XL (trim groups); no factory list or order guide read for 2019; the page does not credit GM for its codes

Yukon XL — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

the body-builder lists name it SLT option 1

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.9.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.9.
GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.1.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.1.
GM factory document — 2027 gmc yukon xl fleet order guide, p.1.

This page aggregates every documented appearance of 4SA in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.