Sources of Various Front Underbody Noises
Various front underbody noises may originate from several different sources and are often difficult to locate and diagnose. Common noise locations include:^ # 1 (engine) crossmember rivets - primarily the rivet or "huck fastener" at the lower left front, behind the steering gear
^ loose or improperly seated spring shock tower rivets/bolts
^ loose or misaligned transmission crossmembers
^ loose or improperly seated front leaf spring bracket rivets
^ loose radius arm brackets
^ loose axle pivot brackets
Other underbody areas that produce similar noises include:
^ transfer case skid plate
^ leaf spring bushings
^ steering intermediate shafts
^ shock bolts
^ bumper brackets
^ brakes
Other Service Bulletins have been published to address the proper repair of these concerns.