Dex-cool
The 2005 GMC Yukon has overhead valves (OHV).
The 2005 GMC Savana has overhead valves (OHV).
read your car manual!
The 2005 GMC Canyon has double overhead cam (DOHC).
The 2005 GMC Savana-Cargo has overhead valves (OHV).
The 2005 GMC Sierra-1500 has overhead valves (OHV).
The 2005 GMC Yukon-XL has overhead valves (OHV).
The 2005 GMC Sierra-2500HD has overhead valves (OHV).
Only in an emergency
Regular antifreeze such as, green, or red!
Dexcool
green