Acadia — first generation, Lambda (2007–2017) → 2009 ✓ Factory-verified internal ⛭ GM factory document — 2009 gmc acadia 2wd rpo code list, p.1.
Envoy — GMT360 (2002–2009) → 2008, 2009 ✓ Factory-verified internal ⛭ GM factory document — 2008 gmc envoy 2wd rpo code list, p.1. ⛭ GM factory document — 2009 gmc envoy 4wd rpo code list, p.1.