Express 1/2 Ton Van V8-5.7L VIN R (1999)
Wheels: Testing and Inspection
Wheel Mounting Surface Check
You must replace any wheels which are bent, dented, or which have excessive lateral or radial runout. Wheels with runout greater than specified may
cause objectable vibrations.
1. Use a straight edge 203 - 229 mm (8 - 9 inches) long. Place the straight edge on the wheel inboard mounting surface. Try to rock the straight edge
up and down within the mounting surface.
2. Repeat this procedure on at least 3 or 4 different positions on the inboard mounting surface.
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The outer ring of the mounting surface normally is raised above everything inside the mounting surface.
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The mounting surface will be raised above the outer ring if the wheel mounting surface has been bent on a tire changer.
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If the straight edge can be rocked, the mounting surface is bent and the wheel must be replaced.
3. Inspect the mounting wheel/nut holes for damage caused from over-torquing the wheel nuts. Inspect for collapsed wheel/nut bosses. Inspect for
cracked wheel bosses.
NOTICE: The use of non-GM original equipment wheels may cause:
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Damage to the wheel bearing, the wheel fasteners and the wheel
