Sierra Classic 2500 4WD V8-8.1L (2007)
Ball Joint: Specifications
Front Suspension
Lower Ball Joint Stud Nut ....................................................................................................................................................................... 100 Nm (74 ft. lbs.)
Lower Ball Joint to Lower Control Arm Nuts ........................................................................................................................................... 70 Nm (52 ft. lbs.)
Upper Ball Joint Stud Nut ......................................................................................................................................................................... 50 Nm (37 ft. lbs.)
Ball Joint Inspection (Lower Ball Joint)
Gently lift or pry the suspension upward then let it settle.
The dial indicator reading should be no more than 2 mm (0.079 inch). If the reading is out of specification, replace the ball joint.
Ball Joint Inspection (Upper Ball Joint)
Apply downward force to the upper control arm and zero the indicator pointer/pad against the rim of the upper ball joint.
Release the arm and check the dial indicator. The dial indicator reading should be no more than 2 mm (0.079 inch). If the reading is too high, replace the
upper control arm. Refer to Upper Control Arm Replacement.
