What's the 2006 GMC Sierra coolant capacity?

The 2006 GMC Sierra equipped with A5.3 liteR8-cylinder engine uses 15.2-16.8 US quarts of orange antifreeze featuring OAT technology designed for American vehicles. It should be used blended with water if not already diluted to A50/50 ratio. The coolant reservoir can be found under hood in the engine bay on the passenger's side behind the air intake boxAgainst the middle of the firewall. Always check levels when the car is cooled. Never release a coolant cap when the engine is hot or has been recently running to prevent sputtering and burns from hot coolant. Signs that Your antifreeze may be low include elevated engine temperatures, warning lights and leaks from the front of the vehicle. If the thermostat, water pump or radiator hoses need replacement or repair, antifreeze levels may be impaired.