The 2009 GMC Acadia has double overhead cam (DOHC).
The 2008 GMC Acadia has double overhead cam (DOHC).
The 2013 GMC Acadia has double overhead cam (DOHC).
The 2010 GMC Acadia has double overhead cam (DOHC).
The 2007 GMC Acadia has double overhead cam (DOHC).
The 2012 GMC Acadia has double overhead cam (DOHC).
The 2011 GMC Acadia has double overhead cam (DOHC).
The 2014 GMC Acadia has double overhead cam (DOHC).
The 2009 GMC Canyon has double overhead cam (DOHC).
The 2009 GMC Savana has overhead valves (OHV).
The 2009 GMC Yukon has overhead valves (OHV).
The 2009 GMC Sierra-2500HD has overhead valves (OHV).
The 2009 GMC Savana-Cargo has overhead valves (OHV).