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; Firebird years: 3rdgenformula option pages 1990
VC4 Factory-verified
Also described as Label, price/fuel economy, Puerto Rico and Virgin Islands
Also documented for BuickCadillacChevroletGMCOldsmobileSaturn
Documented applications
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The 2000 list shortens it to price/fuel economy label.
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the 2003–2006 lists print "&" for "and".
This page aggregates every documented appearance of VC4 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.