UE1 Factory-verified

GMC · Regular Production Option

Communication system, vehicle, GPS 1

Years 2001–09, 2014–27 Models 31 Factory citations 125

Also described as OnStarOnStar services capableOnStar communication systemOnStar communication system (GPS)OnStar plan, 6 monthsOnStar Guidance Plan, trialOnStar and GMC connected services capableOnStar capable

Also documented for Buick Cadillac Chevrolet Hummer Oldsmobile Pontiac Saturn

Documented applications

Acadia — first generation, Lambda (2007–2017)

2007–2009, 2014–2016 Factory-verified

the 2014–2016 guides read 6 months of the OnStar Directions and Connections plan in 2014–2015 and of the OnStar Guidance Plan in 2016.

GM factory document — 2007 gmc acadia 2wd rpo code list, p.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.2.
GM factory document — 2015 gmc acadia fleet order guide wayback, p.2.
GM factory document — 2016 gmc acadia fleet order guide wayback, p.2.

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

2017–2019 Factory-verified

2019 guide: all trims: S; 2017: Guidance Plan for 6 months; 2018: Guidance Plan limited trial; 2019: OnStar and GMC connected services capable, fleet orders with a 3-month trial

GM factory document — 2017 gmc acadia order guide copy gm authority, p.3, p.19.
GM factory document — 2018 gmc acadia order guide copy gm authority, p.4, p.25.
GM factory document — 2019 gmc acadia order guide copy gm authority, p.4, p.27.

Acadia — Third generation (2024–2027)

2025–2027 Factory-verified

S on all trims

GM factory document — 2025 gmc acadia fleet order guide, p.5.
GM factory document — 2026 gmc acadia fleet order guide, p.5.
GM factory document — 2027 gmc acadia fleet order guide, p.6.

Canyon — Second generation (GMT31XX) (2015–2022)

2015–2017, 2019, 2021–2022 Factory-verified

2015–2016: SLE, SLT: S; Canyon: O; SL: not offered; 2021: Elevation, AT4, Denali: S; Elevation Standard: O; 2015: Directions and Connections plan for 6 months; 2016: Guidance plan for 6 months; 2021: OnStar and GMC connected services capable

GM factory document — 2015 gmc canyon fleet order guide wayback, p.2.
GM factory document — 2016 gmc canyon fleet order guide wayback, p.5.
GM factory document — 2017 chevrolet canyon colorado electrical body builders manual service manual 2017 en us, p.17.
GM factory document — 2019 chevrolet 19 coloradocanyon body builder sm u 2018aug01 1, p.13.
GM factory document — 2021 gmc canyon fleet order guide wayback, p.1.
GM factory document — 2022 chevrolet 22 canyon colorado electrical body builder sm en us 2021oct15, p.13.

Canyon — Third generation (VSS-T) (2023–2027)

2023–2027 Factory-verified

S on all trims; the 2024 guide words it as OnStar and GMC connected services capable

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.13.
GM factory document — 2024 gmc canyon fleet order guide wayback, p.1.
GM factory document — 2025 gmc canyon fleet order guide, p.2.
GM factory document — 2026 gmc canyon fleet order guide, p.3.
GM factory document — 2027 gmc canyon fleet order guide, p.3.

Canyon — GMT355 (2004–2012)

2004–2009 Factory-verified

GM factory document — 2004 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2005 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2006 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2007 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2008 gmc canyon pickup 2wd rpo code list, p.1.
GM factory document — 2009 gmc canyon pickup 2wd rpo code list, p.1.

Envoy — GMT360 (2002–2009)

2002–2009 Factory-verified

GM factory document — 2002 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2005 gmc envoy 2wd rpo code list, p.1.
GM factory document — 2009 gmc envoy 4wd rpo code list, p.1.

Hummer EV Pickup (2022–2027)

2025–2026 Factory-verified

GM factory document — 2025 gmc hummer ev pickup fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc hummer ev pickup fleet order guide rpo codes, p.1.

Hummer EV SUV — BT1 (2024–2027)

2025–2026 Factory-verified

GM factory document — 2025 gmc hummer ev suv fleet order guide, p.2.
GM factory document — 2026 gmc hummer ev suv fleet order guide, p.3.

Jimmy — second generation (1995–2001)

2001 Factory-verified

GM factory document — 2001 gmc jimmy 4wd rpo code list, p.1.

Savana — GMT610 (2003–2027)

2003–2006, 2014–2016, 2018, 2022–2027 Factory-verified

the 2023 Upfitter list reads Communication system, vehicle, OnStar and the 2025–2027 guides read OnStar services capable; S: Cargo 1WT, Cutaway 1WT, Cutaway 2WT (2025–2026), Passenger 1LS, Passenger 1LT

GM factory document — 2003 gmc savana rpo code list, p.1.
GM factory document — 2006 gmc savana rpo code list, p.1.
GM factory document — 2014 chevrolet gh van elec bbm si brief, p.8.
GM factory document — 2016 chevrolet express savana electrical body builders manual service manual 2016 en us, p.11.
GM factory document — 2018 chevrolet 18 express savana bodybuilders sm 2017nov06, p.17.
GM factory document — 2022 chevrolet 22 express savana electrical body builder sm en us 2021oct12, p.14.
GM factory document — 2023 chevrolet 23 express savana body builder sm en us 2022sep13, p.15.
GM factory document — 2025 chevrolet my25 express savana electrical bbm, p.13.
GM factory document — 2025 gmc savana cargo fleet order guide, p.21.
GM factory document — 2025 gmc savana cutaway fleet order guide, p.27.
GM factory document — 2025 gmc savana passenger fleet order guide, p.17.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.13.
GM factory document — 2026 gmc savana cargo fleet order guide, p.22.
GM factory document — 2026 gmc savana cutaway fleet order guide, p.28.
GM factory document — 2026 gmc savana passenger fleet order guide, p.18.
GM factory document — 2027 gmc savana cargo fleet order guide, p.20.
GM factory document — 2027 gmc savana cutaway fleet order guide, p.14.
GM factory document — 2027 gmc savana passenger fleet order guide, p.17.

Sierra EV — BT1 (2024–2027)

2025–2027 Factory-verified

GM factory document — 2025 gmc sierra ev denali fleet order guide rpo codes, p.1.
GM factory document — 2025 gmc sierra ev denali fleet order guide, p.3.
GM factory document — 2027 gmc sierra ev fleet order guide rpo codes, p.1.
GM factory document — 2027 gmc sierra ev fleet order guide, p.5.

Sierra 1500 — Next-Generation (2027)

2027 Factory-verified

all trims: included in the trim group

GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide, p.15.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sierra — GMT800 (1999–2007)

2001–2007 Factory-verified

GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra — GMT900 (2007–2013)

2009 Factory-verified

The list prints G.P.S. 1.

GM factory document — 2009 gmc sierra 2wd rpo code list, p.1.

Sierra HD — GMT800 (2001–2007)

2001–2007 Factory-verified

GM factory document — 2001 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2003 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2004 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2005 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2006 gmc gmc c sierra 2wd rpo code list, p.1.
GM factory document — 2007 gmc sierra classic 2wd rpo code list, p.1.

Sierra HD — GMT900 (2007–2014)

2007–2009, 2014 Factory-verified

the list prints G.P.S. 1; the 2014 guides call it OnStar

GM factory document — 2007 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2008 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2009 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2014 gmc sierra 2500hd fleet order guide wayback, p.2.
GM factory document — 2014 gmc sierra 3500hd fleet order guide wayback, p.2.

Sierra HD — K2XX (2015–2019)

2015 Factory-verified

the 2015 guides print OnStar Directions and Connections for 6 months; the 2018 guide prints an OnStar Guidance plan trial with no term, so 2018 is not claimed; the 2019 guide prints OnStar and GMC connected services capable (fleet orders receive a 3-month trial), so 2019 is not claimed; 2015 marks: Sierra: O; SLE, SLT: included in the trim group

GM factory document — 2015 gmc sierra 2500hd fleet order guide wayback, p.2.
GM factory document — 2019 gmc sierra 2500hd fleet order guide wayback, p.1.

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

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

Sierra — K2XX (2014–2019)

2014, 2016 Factory-verified

the 2014 guide names the Directions and Connections plan, the 2016 guides the Guidance Plan; the Silverado K2XX doc reads the Directions and Connections plan; the 2018 guide prints a limited-trial Guidance Plan with no term, so 2018 is not claimed; the 2019 guide reads OnStar and GMC connected services capable.

GM factory document — 2014 gmc sierra 1500 fleet order guide wayback, p.2.
GM factory document — 2016 gmc sierra 1500 fleet order guide wayback, p.2.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.14.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.15.
GM factory document — 2022 gmc 22 sierra 1500 new electrical body builder sm en us 2022jul20, p.14.
GM factory document — 2023 gmc 23 sierra 1500 electrical body builder sm en us 2022oct12, p.14.
GM factory document — 2024 gmc 24 sierra 1500 sm electrical body builder esid 23dec12, p.16.
GM factory document — 2025 gmc my25 sierra 1500 electrical bbm, p.14.
GM factory document — 2025 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sonoma — second generation (1994–2004)

2001–2002 Factory-verified

GM factory document — 2001 gmc sonoma pickup 4wd rpo code list, p.1.
GM factory document — 2002 gmc sonoma pickup 4wd rpo code list, p.1.

Terrain — First generation (2010–2017)

2016–2017 Factory-verified

S on all trims; 6 months in 2016; 3 months in 2017 (6 months on fleet orders); excludes hands-free calling

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

all trims: S; fleet orders: 3-month trial

GM factory document — 2019 gmc terrain order guide copy gm authority, p.5, p.33.

Terrain — Third generation (2025–2027)

2025–2027 Factory-verified

S on all trims

GM factory document — 2025 gmc next generation terrain fleet order guide, p.3.
GM factory document — 2026 gmc next generation terrain fleet order guide, p.4.
GM factory document — 2027 gmc terrain fleet order guide, p.4.

Yukon — GMT800 (2000–2006)

2001–2006 Factory-verified

GM factory document — 2001 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2002 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2003 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2004 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2005 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2006 gmc yukon 2wd rpo code list, p.1.

Yukon — GMT900 (2007–2014)

2007–2009 Factory-verified

GM factory document — 2007 gmc yukon 2wd rpo code list, p.1.
GM factory document — 2009 gmc yukon 2wd rpo code list, p.1.

Yukon — K2XX (2015–2020)

2015–2018 Factory-verified

S on all trims, with a 6 month trial plan (Directions and Connections in 2015, Guidance from 2016); 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 — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.34.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.2.

Yukon — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: S on all trims

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.12.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.12.
GM factory document — 2025 gmc new yukon denali fleet order guide, p.4.
GM factory document — 2026 gmc yukon denali fleet order guide, p.4.
GM factory document — 2027 gmc yukon fleet order guide, p.4.

Yukon XL — K2XX (2015–2020)

2015–2017 Factory-verified

S on all trims; 2015: Directions and Connections plan; 2016: Guidance plan

GM factory document — 2015 gmc yukon xl denali fleet order guide wayback, p.2, p.5.
GM factory document — 2016 gmc yukon xl denali fleet order guide wayback, p.2, p.5.
GM factory document — 2016 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2016 en us, p.15.
GM factory document — 2017 chevrolet escalade escalade esv suburban tahoe yukon yukon xl electrical body builders manual service manual 2017 en us 1, p.34.

Yukon XL — T1XX (2021–2027)

2022–2023, 2025–2027 Factory-verified

2027: S on all trims

GM factory document — 2022 gmc 22 yukon yukon xl electrical body builder sm u 2021oct13, p.12.
GM factory document — 2023 gmc 23 yukon yukon xl electrical body builder sm en us 092822, p.12.
GM factory document — 2025 gmc new yukon xl denali fleet order guide, p.4.
GM factory document — 2026 gmc yukon xl denali fleet order guide, p.4.
GM factory document — 2027 gmc yukon xl fleet order guide, p.4.

This page aggregates every documented appearance of UE1 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.