12C ✓ Factory-verified

Oldsmobile · Regular Production Option

Trim combination, cloth, Graphite

Years 1998 Models 3 Factory citations 3

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Also documented for BuickChevroletPontiac

Documented applications

Achieva — N-body (1992–1998) →

• 1998 ✓ Factory-verified

  GM prints "(E)(94)".

  ⛭ GM factory document — 1998 oldsmobile achieva rpo code list, p.1.

Cutlass — N-body (1997–1999) →

• 1998 ✓ Factory-verified

  GM prints "(E)(94)".

  ⛭ GM factory document — 1998 oldsmobile cutlass rpo code list, p.1.

Eighty Eight (LSS) — H-body (1992–1999) →

• 1998 ✓ Factory-verified

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

  ⛭ GM factory document — 1998 oldsmobile eighty eight rpo code list, p.1.

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