The 2009 Chevrolet Colorado has double overhead cam (DOHC).
The 2009 Chevrolet Traverse has double overhead cam (DOHC).
The 2009 Chevrolet Malibu has double overhead cam (DOHC).
The 2009 Chevrolet Suburban has overhead valves (OHV).
The 2009 Chevrolet Express has overhead valves (OHV).
The 2009 Chevrolet Tahoe has overhead valves (OHV).
The 2009 Chevrolet Equinox has overhead valves (OHV).
The 2009 Chevrolet Corvette has overhead valves (OHV).
The 2009 Chevrolet Impala has overhead valves (OHV).
The 2009 Chevrolet Silverado-3500HD has overhead valves (OHV).
The 2009 Chevrolet Silverado-2500HD has overhead valves (OHV).
The 2009 Chevrolet Tahoe-Hybrid has overhead valves (OHV).