VEHICLE DESCRIPTION: MEDIUM DUTY TRUCKS EQUIPPED WITH AXLE ASSEMBLIES WHICH MAY HAVE BEEN MANUFACTURED WITH TRW MODEL 20EDL BALL SOCKETS. THE TIE ROD BALL-SOCKET BEARINGS HAVE A BELOW SPECIFICATION CASE DEPTH AND/OR HARDNESS WHICH CAN LEAD TO PREMATURE WEAR OUT OF THE SOCKET IN SOME APPLICATIONS.
IF THIS CONDITION OCCURS, THE DRIVER CAN LOSE STEERING CONTROL, POSSIBLY RESULTING IN A VEHICLE CRASH.
DEALERS WILL REPLACE THE BALL SOCKET ASSEMBLIES. OWNER NOTIFICATION BEGAN APRIL 24, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT CHEVROLET AT 1-800-1020 OR GMC AT 1-800-462-8782.
ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-888-DASH-2-DOT (1-888-327-4236).