UD5 Factory-verified

GMC · Regular Production Option

Park assist, front and rear

Years 2014–20, 2022–27 Models 10 Factory citations 40

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Also described as Front and rear park assistFront and rear park assist, ultrasonicFront and Rear Park Assist

Also documented for Buick Cadillac Chevrolet

Documented applications

Sierra EV — BT1 (2024–2027)

2026–2027 Factory-verified

2026: S in 3SB; □ (included in equipment group, upgradeable) in 3SC; not offered in 4SC, 4SD, 5SB, 5SC, 5SD; 2027: S in 3SB; □ (included in equipment group, upgradeable) in 3SC; not offered in 4SC, 4SD, 5SC, 5SD

GM factory document — 2026 gmc sierra ev fleet order guide rpo codes, p.1.
GM factory document — 2026 gmc sierra ev fleet order guide, p.2.
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.2.

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.19.
GM factory document — 2027 gmc next generation sierra 1500 retail and fleet fleet order guide rpo codes, p.1.

Sierra HD — K2XX (2015–2019)

2015, 2018–2019 Factory-verified

2015 marks: Sierra, SLE: not offered; SLT: O; 2018: GM's 2018 Sierra 2500HD order guide; 2019: named in the 2019 interior page's package contents or footnotes

GM factory document — 2015 gmc sierra 2500hd fleet order guide wayback, p.3.
GM factory document — 2019 gmc sierra 2500hd fleet order guide wayback, p.1.
GM factory document — 2018 gmc sierra 2500hd order guide copy gm authority, p.21.

Sierra HD — T1XX (2020–2027)

2025–2027 Factory-verified

only in: 2500 HD and 3500 HD pickup; Pro, SLE, SLT: O; AT4, AT4X, Denali, Denali Ultimate: included in the trim group

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.
GM factory document — 2025 gmc sierra 2500 hd retail and fleet fleet order guide, p.19.
GM factory document — 2026 gmc sierra 2500 hd retail and fleet fleet order guide, p.18.
GM factory document — 2027 gmc sierra 2500 hd retail and fleet fleet order guide, p.18.

Sierra — K2XX (2014–2019)

2014, 2016–2018 Factory-verified

GM factory document — 2014 gmc sierra 1500 fleet order guide wayback, p.3.
GM factory document — 2016 gmc sierra 1500 fleet order guide wayback, p.3.
GM factory document — 2017 chevrolet sierra silverado electrical body builders manual service manual 2017 en us, p.34.
GM factory document — 2018 gmc sierra 1500 order guide copy gm authority, p.91.

Sierra — T1XX (2019–2026)

2019–2020, 2022–2026 Factory-verified

GM factory document — 2019 gmc 19 sierra 1500 body builder feb 20, p.13.
GM factory document — 2020 gmc 20 sierra 1500 electrical body buil 1, p.14.
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.

Yukon — K2XX (2015–2020)

2015–2019 Factory-verified

S on all trims; 2018 from GM's 2018 Yukon order guide

GM factory document — 2015 gmc yukon denali fleet order guide wayback, p.3.
GM factory document — 2016 gmc yukon denali fleet order guide wayback, p.3.
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 — 2019 gmc yukon denali fleet order guide wayback, p.1.
GM factory document — 2018 gmc yukon order guide copy gm authority, p.4.

Yukon — T1XX (2021–2027)

2022–2023 Factory-verified

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.

Yukon XL — K2XX (2015–2020)

2015–2017 Factory-verified

S on all trims

GM factory document — 2015 gmc yukon xl denali fleet order guide wayback, p.3, p.5.
GM factory document — 2016 gmc yukon xl denali fleet order guide wayback, p.3, 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 Factory-verified

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.

This page aggregates every documented appearance of UD5 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.