12C ✓ Factory-verified

Buick · Regular Production Option

Trim combination, cloth, Graphite

Years 1998 Models 2 Factory citations 2

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Also documented for ChevroletOldsmobilePontiac

Documented applications

LeSabre — H-body (1992–1999) →

• 1998 ✓ Factory-verified

  GM prints "(C) (96)" after the name.

  ⛭ GM factory document — 1998 buick lesabre rpo code list, p.1.

Skylark — N-body (1992–1998) →

• 1998 ✓ Factory-verified

  GM prints "(E)(94)".

  ⛭ GM factory document — 1998 buick skylark rpo code list, p.1.

This page aggregates every documented appearance of 12C in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.