Some wire wheel covers may have a snapping or creaking noise when driving at low speeds. This noise may be caused by the wheel cover flexing on the wheel. This condition can be corrected by removing the wheel covers and placing them upside down on a covered bench. Then center punch and drill four (4) 1/4" holes evenly spaced in the wheel cover (see illustration). Holes should be drilled on the second step of the cover from the inboard side. Install the four (4) nylon clips, P/N 411700, in the drilled holes.
General Motors bulletins are intended for use by professional technicians, not a "do-it-yourselfer". They are written to inform those technicians of conditions that may occur on some vehicles, or to provide information that could assist in the proper service of a vehicle. Properly trained technicians have the equipment, tools, safety instructions and know-how to do a job properly and safely. If a condition is described, do not assume that the bulletin applies to your vehicle, or that your vehicle will have that condition. See a General Motors dealer servicing your brand of General Motors vehicle for information on whether your vehicle may benefit from the information.