Jeep 2013 Grand Cherokee - Manual (Page 484)

OFF-ROAD DRIVING TIPS
NOTE: Prior to off-road driving, remove the front air
dam to prevent damage. The front air dam is attached to
the lower front fascia with seven quarter turn fasteners
and can be removed by hand.
Front Air Dam
1 — Front Bumper
2 — Front Air Dam Fasteners
482 STARTING AND OPERATING