GMC Sierra Classic 2500 Gas Tank Size
Gas tank size for GMC Sierra Classic 2500 from 1999 to 2000 production years. Fuel tank capacity in gallons and litres.
As an Amazon Associate, we may earn a commission from purchases made through links marked. Read more in our disclaimer.
| Year | Gallons | Litres | Fuel type |
|---|---|---|---|
| 2000 | 25 - 34 | 95 - 129 | Gas |
| 1999 | 25 - 34 | 95 - 129 | Gas |