Where is the inertia switch in a 99 oldsmobile 88?

In a 1999 Oldsmobile 88, the inertia switch is typically located in the trunk, near the fuel tank or on the rear passenger side. It may be mounted on the body or along the rear frame. To find it, check for a small, rectangular box with wiring connected to it. If you have trouble locating it, refer to the vehicle's service manual for specific details.