NG1 ✓ Factory-verified

Hummer · Regular Production Option

Certification, emission, geographically restricted for vehicles up to 14,000 lbs

Years 2006 Models 1 Factory citations 1

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Also documented for BuickCadillacChevroletGMCOldsmobilePontiacSaturn

Documented applications

H2 and H2 SUT — GMT820 (2003–2009) →

• 2006 ✓ Factory-verified internal

  the list says to use 2003 model year.

  ⛭ GM factory document — 2006 hummer h2 rpo code list, p.1.

This page aggregates every documented appearance of NG1 in the Hummer reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.