Buick 1994 Century Owner's Manual page 185

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2. Position the lower sling crossbar directly under the
rear bumper.
3. Attach a separate safety chain to each side of the
axle inboard of the spring.
4. Be certain your vehicle is towed no faster than 35 mph
(56 km/h) and no farther than 50 miles (80 km) to avoid
damage to your transaxle.
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