N12 Factory-verified

GMC · Regular Production Option

Exhaust system, rear exit

Years 1998–10, 2014–18 Models 8 Factory citations 37
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Also described as Exhaust, rear exit

Also documented for CadillacChevroletOldsmobilePontiac

Documented applications

This page aggregates every documented appearance of N12 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.