GM Service Manual Online
For 1990-2009 cars only

The wheels that came with your new vehicle, excluding the wheel for the spare tire, are part of the enhanced mobility tire and wheel system. The enhanced mobility system wheels are a unique, two-piece forged aluminum design. The inner and outer halves of the wheel are fastened together with bolts located on the back surface of the wheel. These wheels have a unique offset and bolt hole diameter. If you need to replace any of your wheels, wheel bolts, or wheel nuts, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts and wheel nuts for your DeVille Protection Series vehicle.

Replace any wheel that is bent, cracked or badly rusted or corroded. If wheel nuts keep coming loose, the wheel, wheel bolts and wheel nuts should be replaced. If the wheel leaks air, replace it. Some aluminum wheels can sometimes be repaired. See your GM dealer/retailer if any of these conditions exist.

Your GM dealer/retailer will know the kind of wheel you need.

Each new wheel should have the same load-carrying capacity, diameter, width, offset and be mounted the same way as the one it replaces.

If you need to replace any of your wheels, wheel bolts, wheel nuts, or Tire Pressure Monitor System (TPMS) sensors, replace them only with new GM original equipment parts. This way, you will be sure to have the right wheel, wheel bolts, wheel nuts, and TPMS sensors for your vehicle.

Caution: Using the wrong replacement wheels, wheel bolts, or wheel nuts on your vehicle can be dangerous. It could affect the braking and handling of your vehicle, make your tires lose air and make you lose control. You could have a collision in which you or others could be injured. Always use the correct wheel, wheel bolts, and wheel nuts for replacement.

Notice: The wrong wheel can also cause problems with bearing life, brake cooling, speedometer or odometer calibration, headlamp aim, bumper height, vehicle ground clearance, and tire or tire chain clearance to the body and chassis.

If your vehicle is a professional model, the wheels have a unique offset and bolt hole diameter. Each of the wheels on the professional vehicle have eight wheels nuts. The wheels on the non-professional vehicle have five wheel nuts. See Changing a Flat Tire for more information.

Used Replacement Wheels

Caution: Putting a used wheel on the vehicle is dangerous. You cannot know how it has been used or how far it has been driven. It could fail suddenly and cause a crash. If you have to replace a wheel, use a new GM original equipment wheel.