NT4 ✓ Factory-verified

Saturn · Regular Production Option

Emission system, EEC 05

Years 2007–09 Models 1 Factory citations 2

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Also documented for BuickCadillacChevroletGMCHummerPontiac

Documented applications

Sky (2007–2009) →

• 2007–2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2007 saturn sky rpo code list, p.1.

  ⛭ GM factory document — 2009 saturn sky rpo code list, p.1.

This page aggregates every documented appearance of NT4 in the Saturn reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.