That will be 630 miles to a tank full of gas / 42 gallons.
It depends on the conditions and how you drive it
Between highway and city driving (and according to the link below), 15 mpg.
If your lucky. 10 to 12 miles per gallon.
The Chevrolet Tahoe boasts a gas efficient V8 engine which gets a total of fifteen miles per gallon in the city and twenty-one miles per gallon on the highway.
about 10 miles per gallon
The fuel tank on the 2004 Chevrolet Suburban 1500 LS 4-door SUV holds 31 gallons of gas. This vehicle gets 13 miles per gallon in the city and 17 miles per gallon on the highway.
The estimated miles per gallon (MPG) for the 2013 Chevrolet Suburban is around fifteen MPG for city driving and around twenty-one MPG for highway driving.
A 1991 Chevy Suburban will get 11 miles per gallon if driving in the city. It gets around 15 miles per gallon on the highway.
The 1993 Chevy Suburban gets 11 miles per gallon when driving in the city. This model gets 16 miles per gallon on the highway.
1 billion miles to the gallon
Mine gets about 13 miles to the gallon.
The average miles per gallon for a Chevrolet Silverado is 16.68 miles per gallon. This is a rough average as other sites indicate it is eleven miles per gallon. This will depend on your speed.