D31 ✓ Factory-verified

Cadillac · Regular Production Option

Mirror, inside rearview, tilt

Years 2004–06, 2025–26 Models 3 Factory citations 6

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Also described as Mirror, inside rearview manual day/night

Also documented for BuickChevroletGMCPontiacSaturn

Documented applications

CT4 — Alpha 2 (2020–2026) →

• 2025–2026 ✓ Factory-verified

  only in: CT4; Luxury: S

  ⛭ GM factory document — 2025 cadillac ct4 fleet order guide, p.3.

  ⛭ GM factory document — 2026 cadillac ct4 fleet order guide, p.3.

Escalade EXT — GMT800 (2002–2006) →

• 2004–2006 ✓ Factory-verified

  GM marks it a duplicate with D36

  ⛭ GM factory document — 2004 cadillac escalade ext rpo code list, p.1.

  ⛭ GM factory document — 2006 cadillac escalade ext rpo code list, p.1.

Escalade — GMT800 (2002–2006) →

• 2004–2006 ✓ Factory-verified

  GM's list marks it a duplicate of D36

  ⛭ GM factory document — 2004 cadillac escalade 2wd rpo code list, p.1.

  ⛭ GM factory document — 2006 cadillac escalade rpo code list, p.1.

Related codes · mentioned in these notes

S

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