GENERAL MOTORS issued a recall on the BLAZER and JIMMY models

CERTAIN 4WD VEHICLES COULD HAVE EITHER OR BOTH UPPER BALL JOINTS UNDERTORQUED. THIS CAN RESULT IN IMPROPER SEATING OF THE TAPERED BALL JOINT STUD IN THE TAPERED HOLE OF THE STEERING KNUCKLE. IN THIS CONDITION, THE STUD CAN LOOSEN, EVENTUALLY FATIGUE AND FRACTURE. THIS COULD RESULT IN LOSS OF VEHICLE CONTROL AND A CRASH WITHOUT PRIOR WARNING.CORRECTION: DEALERS WILL TORQUE THE UPPER BALL JOINT NUT ON BOTH SIDES OF THE VEHICLE TO THE REQUIRED SPECIFICATION.