| Capacity | 18.0 Gallon (US) (gal (US)) |
Fuel Tank
Need a step-by-step guide?
Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 1999 Buick.
Need a step-by-step guide?
Get an AI-powered repair guide with parts lists, cost estimates, and clear instructions for your 1999 Buick.
| Capacity | 18.0 Gallon (US) (gal (US)) |