Oldsmobile 2001 Silhouette Owner's Manual page 347

The fuel door is located on the driver's side of the vehicle.
When the fuel door is opened on a vehicle with dual
sliding doors, the driver's side sliding door will only
open partway.
6-6
While refueling, let the cap hang by the tether as shown.
To remove the fuel cap, turn it slowly to the left
(counterclockwise). The fuel cap has a spring in it;
if you let go of the cap too soon, it will spring back
to the right.