Y55 ✓ Factory-verified

Chevrolet · Regular Production Option

Comfort Package

Years 2025–27 Models 3 Factory citations 9

Query this via API →

Also described as Comfort package

Also documented for Buick

Documented applications

Bolt — second generation (2027) →

• 2027 ✓ Factory-verified

  LT: O; RS: not available; includes A2X, KA1, N5E, KI3 and DD8

  ⛭ GM factory document — 2027 chevrolet new bolt fleet order guide, p.6.

Suburban — T1XX (2021–2027) →

• 2025–2027 ✓ Factory-verified

  2027: LT, RST, Z71: O; includes A45, UQS, DXR, KI3, KA6, ATT, AS8, TGE, TAU

  ⛭ GM factory document — 2025 chevrolet new suburban fleet order guide, p.13.

  ⛭ GM factory document — 2026 chevrolet suburban fleet order guide, p.13.

  ⛭ GM factory document — 2027 chevrolet suburban fleet order guide, p.13.

  ⛭ GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.11.

Tahoe — T1XX (2021–2027) →

• 2025–2027 ✓ Factory-verified

  2027: LT, RST, Z71: O; includes A45, UQS, DXR, KI3, KA6, ATT, AS8, TGE, TAU

  ⛭ GM factory document — 2025 chevrolet new tahoe retail and fleet fleet order guide, p.14.

  ⛭ GM factory document — 2026 chevrolet tahoe retail and fleet fleet order guide, p.15.

  ⛭ GM factory document — 2027 chevrolet tahoe retail and fleet fleet order guide, p.15.

  ⛭ GM factory document — 2026 chevrolet suburban tahoe electrical body builder manual service manual 2026 en us, p.11.

Related codes · mentioned in these notes

A2XA45AS8ATTDD8DXRKA1KA6KI3N5ETAUTGEUQSZ71

This page aggregates every documented appearance of Y55 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.