1997 Buick Park Avenue Owner's Manual - Page 238

Rear Towing Tow Limits -- 55 rnph (88 k d ) , 500 miles (800 krn) Attach T-hook chains on both sides in the slotted holes in the floor pan support rails just ahead of the rear wheels. Attach a separate safety chain around the outboard end of each lower control arm. 5-10