The gas tank on the 2008 GMC Sierra-2500HD holds 34 gal..
28 gallons
It will hold about 14-17 gallons of gas
16 gallons
12 Gallons
18 Gallons
19.5 gallons
18.5 Gallons
19 us Gallons
31 gallons totally empty.
16.5 gallons
17 gallons maximum
20 gallons