19 Gallons.
aaround 14..
The 2013 Cadillac Escalade SUV has a gas tank capacity of 26 gallons. Its manufacturer's suggested retail price started at $63,745.
http://www.fueleconomy.gov/Feg/noframes/24629.shtml
The 2014 Chevrolet Tahoe SUV has a manufacturer's suggested retail price of $60,840. Its fuel tank capacity is 26 gallons.
The fuel tank capacity of a 2000 Chevrolet Suburban SUV is 33 gallons. It has 285 horsepower, and can tow up to 9,000 pounds.
The 2005 Chevrolet Equinox SUV has a 5,070 pound gross weight, and a 3,660 pound curb weight. The gas tank holds 17 gallons.
23-30 gallons
It's a 21 gallon size tank. Although it's design has to compensate for the fumes and air swashing inside and it'll only realistically fill up to 18 - 19 gallons of fuel.
The 97 to 02 series 2 wheel drive models had the 26 and 4 wheel drive models had the 30 gallon.
The 2007 Chevrolet Suburban SUV gets 14 mpg in the city, and 19 mpg on the highway. Its gas tank has a 31 gallon capacity.
The 1998 Kia Sportage SUV has a 15.8 gallon fuel tank capacity. It gets 17 miles per gallon in the city, and 21 miles per gallon on the highway.