1995 Buick LeSabre Owner's Manual - Page 182

Rear Towing Hookups TOW LIMITS - 55 MPH (88 KPH), 500 MILES (800 KM) Attach T-hook chains to the slots in the bottom of the floor pan support rails, just ahead of the rear wheels on both sides. Position the lower sling crossbardirectly under the rear fascia. A 4" x 4" wood beam is NOT needed. Attach a separate safety chain around the outboard end of each lower control arm.