1SM ✓ Factory-verified

Buick · Regular Production Option

Trim group, Enclave Sport Touring

Years 2025–27 Models 1 Factory citations 3

Query this via API →

Also documented for CadillacChevroletGMC

Documented applications

Enclave — VSS-S (2025–2027) →

• 2025–2027 ✓ Factory-verified

  Sport Touring: S; GM fleet model 4LD56; shown in the trim headings of the guides; GM Authority gives 1SM (4LD56) for the 2026 Sport Touring; NICB prints the series as ST

  ⛭ GM factory document — 2025 buick all new enclave fleet order guide, p.1.

  ⛭ GM factory document — 2026 buick enclave fleet order guide, p.1.

  ⛭ GM factory document — 2027 buick enclave fleet order guide, p.1.

This page aggregates every documented appearance of 1SM in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.