Sierra 3500 Denali 4WD V8-6.0L (2011)
6. If the movement exceeds 2 mm (0.078 in) then replace the idler arm.
7. Install the runout gauge at the idler arm.
8. Push the tire inward slowly with one hand to remove any lash.
Zero out the runout gauge and pull outward in order to take a reading.
