Chevrolet 1997 Monte Carlo Owner's Manual page 220

Filling Your Tank The tethered cap is behind a hinged door on the left side
of your vehicle.
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CAULON:
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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, let the cap hang by the tether below the
fuel fill opening.
To take off the cap, turn
it slowly to the left
(counterclockwise). The cap has a spring in it; if you let
go of the cap too soon, it will spring back to the right.