THE FOUR U-BOLTS NUTS ON EITHER SIDE OF THE REAR AXLE WERE UNDER-TORQUED.
VEHICLE USAGE COULD CAUSE THE NUTS TO LOOSEN AND EVENTUALLY FALL OFF THE U-BOLT. THIS COULD RESULT IN SUDDEN LOSS OF VEHICLE CONTROL INCREASING THE POTENTIAL FOR A VEHICLE CRASH.
DEALERS WILL CHECK THE U-BOLT NUT TORQUE AND RE-TORQUE ANY LOOSE U-BOLTS TO SPECIFICATION.
SYSTEM: SUSPENSION; AXLE; REAR; U-BOLT. VEHICLE DESCRIPTION: LIGHT DUTY PICKUP TRUCKS. NOTE: 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 1-800-222-1020 OR GMC AT 1-800-462-8782. ALSO CONTACT THE NATIONAL HIGHWAY TRAFFIC SAFETY ADMINISTRATION'S AUTO SAFETY HOTLINE AT 1-800-424-9393.