Filling Your Tank - Pontiac 1998 Firebird Owner's Manual

Filling Your Tank
The cap is behind a hinged door on the left side of
your vehicle.
I
Gasoline vapor is highly flammable. It burns
violently, and that can cause very bad injuries.
Don't smoke if you're near gasoline or refueling
your vehicle. Keep sparks, flames and smoking
materials away from gasoline.
While refueling, hang the cap by the tether from
the
pin
on the
fuel door.