STS RWD V8-4.6L VIN A (2006)
Wheels: Service and Repair
Wheel Mounting Surface Check
Wheel Mounting Surface Check
Replace any wheels that are bent or dented, or have excessive lateral or radial runout. Wheels with runout greater than specified may cause
objectionable vibrations.
Wheel Mounting Surface Check
1. Use a straight edge 203 - 229 mm (8 - 9 inch) long. Place the straight edge on the wheel inboard mounting surface. Try to rock the straightedge up
and down within the mounting surface.
2. Repeat this procedure on at least 3–4 different positions on the inboard mounting surface.
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If you can rock the straight edge, the mounting surface is bent and you must replace the wheel.
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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.
3. 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
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Tire damage caused by the modified clearance to the adjacent vehicle components
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Adverse vehicle steering stability caused by the modified scrub radius
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Damage to the vehicle caused by the modified ground clearance
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Speedometer and odometer inaccuracy
Important:
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Replacement wheels must be equivalent to the original equipment wheels in the following ways:
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The load capacity
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The wheel diameter
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The rim width
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The wheel offset
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The mounting configuration
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A wheel of the incorrect size or type may affect the following conditions:
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Wheel and hub-bearing life
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Brake cooling
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Speedometer/odometer calibration
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Vehicle ground clearance
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Tire clearance to the body and the chassis
Replace the wheel if the wheel is bent.
4. Replace the wheel if the wheel/nut boss area is cracked.
To identify aluminum wheels the code, the part number, and the manufacturer identification cast into the back side of the wheel.
