Mirror, inside rearview manual day and night with tilt

Years 2006–08, 2012, 2014, 2016, 2018–19, 2025–27 Models 7 Factory citations 17

Also described as Mirror, inside rearview, manual day/night, tiltMirror, inside rearview manual day/night with tiltMirror, inside rearview, manual day and nightMirror, inside rearview, tilt (duplicate with D36)Mirror, inside rearviewMirror, inside rearview, manual day/night

Also documented for Cadillac Chevrolet GMC Pontiac Saturn

Documented applications

Encore — Gamma II (2013–2022)

2014, 2018–2019 Factory-verified

2014: Base: S; 2018–2019: Encore 1SV, Preferred: S; Sport Touring with C67 or C4P

GM factory document — 2014 buick encore fleet order guide wayback, p.2.
GM factory document — 2018 buick encore order guide copy gm authority, p.3, p.17.
GM factory document — 2019 buick encore order guide copy gm authority, p.2, p.15.

Encore GX — VSS-F (2020–2027)

2025–2027 Factory-verified

Preferred, Sport Touring: S

GM factory document — 2025 buick encore gx fleet order guide, p.3.
GM factory document — 2026 buick encore gx fleet order guide, p.3.
GM factory document — 2027 buick encore gx fleet order guide, p.3.

Envista — VSS-F (2024–2027)

2025–2026 Factory-verified

Preferred, Sport Touring: S

GM factory document — 2025 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2025 buick envista fleet order guide, p.2.
GM factory document — 2026 buick envista fleet order guide rpo codes, p.1.
GM factory document — 2026 buick envista fleet order guide, p.2.

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

2012 Single-source

deleted for 2013 (GM Authority 2013 changes)

Lucerne — G-body (2006–2011)

2006–2008 Factory-verified

The lists mark it a duplicate of D36.

GM factory document — 2006 buick lucerne rpo code list, p.1.
GM factory document — 2008 buick lucerne rpo code list, p.1.

Regal — E2XX (2018–2020)

2018–2019 Factory-verified

2019: Regal: S (2019 Sportback order guide)

GM factory document — 2018 buick regal sportback fleet order guide wayback, p.1.
GM factory document — 2018 buick regal tourx fleet order guide wayback, p.1.
GM factory document — 2019 buick regal sportback order guide copy gm authority, p.3.

Verano — Delta II (2012–2017)

2012, 2016 Factory-verified

2016: 1SV, 1SD: S; 2012: 1SD: S (GM 2012 ordering guide)

GM factory document — 2016 buick verano fleet order guide wayback, p.2.
GM factory document — 2012 buick verano online ordering guide copy gm authority, p.2.

This page aggregates every documented appearance of D31 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.