DD4 ✓ Factory-verified

GMC · Regular Production Option

Mirror, inside rearview, compass

Years 2005–09 Models 1 Factory citations 2

Query this via API →

Also documented for BuickChevroletPontiac

Documented applications

Envoy — GMT360 (2002–2009) →

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

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

This page aggregates every documented appearance of DD4 in the GMC reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.