1R4 ✓ Factory-verified

Pontiac · Regular Production Option

Vehicle identification label 2

Years 2001 Models 1 Factory citations 1

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Also documented for Chevrolet

Documented applications

Firebird — Fourth generation (1993–2002) →

• 2001 ✓ Factory-verified internal
  ⛭ GM factory document — 2001 pontiac firebird rpo code list, p.1.

This page aggregates every documented appearance of 1R4 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.