TL4 Factory-verified

Pontiac · Regular Production Option

Grille, painted

Years 2000–05 Models 1 Factory citations 6
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Also documented for CadillacChevroletHummerOldsmobile

Documented applications

This page aggregates every documented appearance of TL4 in the Pontiac reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.