Sensor indicator, rear parking assist

Years 2002–09, 2014–20, 2022–27 Models 16 Factory citations 57

Also described as Rear Park AssistRear park assistRear park assist, with audible warningRear parking assistRear park assist, ultrasonicPark assist, rear

Also documented for Buick Cadillac Chevrolet Oldsmobile Pontiac Saturn

Documented applications

Acadia — first generation, Lambda (2007–2017)

2007–2009, 2014–2016 Factory-verified

the 2014–2016 guides read rear park assist.

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.3.
GM factory document — 2015 gmc acadia fleet order guide wayback, p.3.
GM factory document — 2016 gmc acadia fleet order guide wayback, p.3.

Acadia — Third generation (2024–2027)

2025–2027 Factory-verified

2025: S on all trims; 2026–2027: Elevation, AT4, Denali: S; Denali Ultimate: not offered

GM factory document — 2025 gmc acadia fleet order guide, p.6.
GM factory document — 2026 gmc acadia fleet order guide, p.6.
GM factory document — 2027 gmc acadia fleet order guide, p.8.

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

2023–2027 Factory-verified

included in a package on all trims

GM factory document — 2023 gmc 23canyon electrical body builder 2023march13, p.13.
GM factory document — 2024 gmc 24 canyon electrical body builder manual 2023oct04, p.13.
GM factory document — 2025 gmc canyon fleet order guide, p.10.
GM factory document — 2026 gmc canyon fleet order guide, p.14.
GM factory document — 2027 gmc canyon fleet order guide, p.14.

Savana — GMT610 (2003–2027)

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

the 2023 Upfitter list reads Park Assist - Rear; O on all trims; in the 2025–2027 guides only in the Cargo and Passenger guides

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.12.
GM factory document — 2025 gmc savana cargo fleet order guide, p.28.
GM factory document — 2025 gmc savana passenger fleet order guide, p.21.
GM factory document — 2026 chevrolet my26 express savana electrical bbm, p.12.
GM factory document — 2026 gmc savana cargo fleet order guide, p.30.
GM factory document — 2026 gmc savana passenger fleet order guide, p.23.
GM factory document — 2027 gmc savana cargo fleet order guide, p.27.
GM factory document — 2027 gmc savana passenger fleet order guide, p.21.

Sierra — GMT800 (1999–2007)

2002 Factory-verified

GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1.

Sierra — GMT900 (2007–2013)

2009 Factory-verified

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

Sierra HD — GMT800 (2001–2007)

2002 Factory-verified

GM factory document — 2002 gmc gmc c sierra 2wd rpo code list, p.1.

Sierra HD — GMT900 (2007–2014)

2009, 2014 Factory-verified

GM factory document — 2009 gmc sierra 2wd rpo code list, p.1.
GM factory document — 2014 gmc sierra 2500hd fleet order guide wayback, p.3.
GM factory document — 2014 gmc sierra 3500hd fleet order guide wayback, p.3.

Sierra HD — K2XX (2015–2019)

2015, 2018–2019 Factory-verified

2015 marks: Sierra: not offered; SLE, 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 — 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, 2022–2023 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.

Terrain — First generation (2010–2017)

2016–2017 Factory-verified

SLE-2, SLT: O, only with PCU

GM factory document — 2016 gmc terrain fleet order guide wayback, p.3.
GM factory document — 2017 gmc terrain fleet order guide wayback, p.3.

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

2019 Factory-verified

SLE, SLE Diesel, SLT, SLT Diesel: O; Denali: S

GM factory document — 2019 gmc terrain order guide copy gm authority, p.5, p.34.

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.2.
GM factory document — 2026 gmc next generation terrain fleet order guide, p.3.
GM factory document — 2027 gmc terrain fleet order guide, p.3.

Yukon — GMT800 (2000–2006)

2002–2006 Factory-verified

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.
2014 Single-source

rear park assist, now standard on SLE models per GM Authority's 2014 Yukon page (RPO Central; its Yukon, Yukon XL and Commercial Fleet lists); no factory list or order guide read for 2014; the page does not credit GM for its codes

This page aggregates every documented appearance of UD7 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.