GM Service Manual Online
For 1990-2009 cars only

Notice: The use of non-GM original equipment wheels may cause:

   • Damage to the wheel bearing, the wheel fasteners and the wheel
   • Tire damage caused by the modified clearance to the adjacent vehicle components
   • Adverse vehicle steering stability caused by the modified scrub radius
   • Damage to the vehicle caused by the modified ground clearance
   • Speedometer and odometer inaccuracy

Important: Replacement wheels must be equivalent to the original equipment wheels in load capacity, diameter, rim width, offset and mounting configuration. A wheel of improper size or type may affect the wheel and bearing life, the brake cooling, the speedometer/odometer calibration, the vehicle ground clearance and the tire clearance to the body and the chassis.

Replace wheels under the following conditions:

    • The wheels are bent or dented
    • The wheels have excessive radial runout
    • The wheels leak air through the wheel welds
    • The wheels have elongated bolt holes
    • The wheel nuts do not stay tight
    • The wheels are very rusty

Wheels with excessive runnout may cause objectionable vibrations.

Steel wheels are identified by a two or three letter code stamped into the rim near the valve stem. Aluminum wheels have the code, part number, and manufacturer ID cast into their back side.