GM Service Manual Online
For 1990-2009 cars only

Tools Required

J 8001 Dial Indicator Set, or equivalent

  1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle in General Information.
  2. Mark the location of the wheels to the wheel studs and mark the specific vehicle position on each tire and wheel - LF, LR, RF, RR.
  3. Remove the tire and wheel assemblies from the vehicle. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
  4. Remove the brake rotors from the vehicle. Clean the mounting surfaces of the brake rotors and the hub/axle flanges of any loose debris, rust, and corrosion. Refer to the following procedures:
  5. •  Front Brake Rotor Replacement in Disc Brakes
    •  Rear Brake Rotor Replacement in Disc Brakes

    Object Number: 205276  Size: SH
  6. Position the J 8001 , or equivalent, on the machined surface of the wheel hub/axle flange outside of the wheel studs.
  7. Rotate the hub one complete revolution in order to find the low spot.
  8. Set the J 8001 , or equivalent, to zero at the low spot.
  9. Rotate the hub one more complete revolution and measure the total amount of wheel hub/axle flange runout.
  10. Specification - Guideline
    Wheel hub/axle flange runout tolerance guideline: 0.132 mm (0.005 in)

  11. If the runout of the wheel hub/axle flange IS within specification, proceed to step 12.
  12. If the runout of the wheel hub/axle flange is marginal, the wheel hub may or may not be the source of the disturbance.
  13. If the runout of the wheel hub/axle flange is excessive, replace the wheel hub/axle flange. Measure the runout of the new wheel hub/axle flange. Refer to the appropriate procedure:
  14. •  Front Wheel Bearing and Hub Replacement in Front Suspension
    •  Rear Wheel Bearing and Hub Replacement in Rear Suspension