N11 ✓ Factory-verified

Buick · Regular Production Option

Exhaust, single outlet, stainless steel

Years 2017–18 Models 1 Factory citations 2

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Also documented for ChevroletPontiac

Documented applications

Envision — D2XX, imported from China (2016–2020) →

• 2017–2018 ✓ Factory-verified

  2018: 1SV, 1SD, 1SL: S

  ⛭ GM factory document — 2017 buick envision order guide copy gm authority, p.6, p.21.

  ⛭ GM factory document — 2018 buick envision order guide copy gm authority, p.6, p.20.

Related codes · mentioned in these notes

1SD1SL1SV

This page aggregates every documented appearance of N11 in the Buick reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.