1998 Buick Riviera Owner's Manual - Page 229

Removing the Flat Tire and Installing'the Spare Tire Your vehicle hasa wheel cover which must be taken off to reach the wheel nuts. Insert the flat end of the wrench into the notch in the center cover. Pry carefully, so the center coveris not scratched. 1. Position the wheel wrench securely over the wheel nuts to loosen, but don't remove them yet. 2. Attach the wheel wrench the bolt on theend of the to jack to create a handle. jack 5-24