NT4 ✓ Factory-verified

GMC · Regular Production Option

Emission system, EEC 05

Years 2005–09 Models 2 Factory citations 4

Query this via API →

Also documented for BuickCadillacChevroletHummerPontiacSaturn

Documented applications

Envoy — GMT360 (2002–2009) →

• 2005–2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2005 gmc envoy 2wd rpo code list, p.1.

  ⛭ GM factory document — 2009 gmc envoy 4wd rpo code list, p.1.

Yukon — GMT900 (2007–2014) →

• 2007–2009 ✓ Factory-verified internal
  ⛭ GM factory document — 2007 gmc yukon 2wd rpo code list, p.1.

  ⛭ GM factory document — 2009 gmc yukon 2wd rpo code list, p.1.

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