This is a cut and paste from cars.com:
Chrysler is recalling 20,459 Jeep Wranglers from the 2010 and 2011 model years because the torque in the fasteners for the front and rear axle attachments may degrade, according to the National Highway Traffic Safety Administration.
In the affected vehicles, the improperly torqued fasteners could lead to noise or difficulty in steering and handling, increasing the risk of a crash. The Wranglers in the recall were built between July 12 and Sept. 10, 2010. You can check your car's build date on a sticker affixed to your driver-side doorjamb.
The recall is expected to begin this month. Dealers will inspect the fasteners and restore their torque values at no charge. Owners can call Chrysler at 800-853-1403 or NHTSA’s vehicle safety hotline at 888-327-4236.