1995 Buick Riviera Owner's Manual - Page 201

The equipment you'll need i g in-thetrunk. Remove the wrench, jack arid spare tire and place them near the flat ~i-e. Your Bnick has a wheel coverwhich must 'be-takmQE to reach the -wheelnuts. Insert the hwked end sf thewrench into the notch i the center cover. Pry eaefully, n so the-center coveris not scratched'.