SHEET METAL CORROSION INSTALLING 'ADD-ON' EQUIPMENT

Whenever items such as body side moldings, vinyl tops, dealer name plates, mud/splash guards, etc., are added to a vehicle after manufacture which require piercing of sheet metal panels, a possibility exists for sheet metal corrosion to occur in areas where the metal has been pierced, as well as other areas caused by water entry at the point of piercing.

The Oldsmobile Perforation From Corrosion Limited Warranty does not cover corrosion due to "vehicle alteration"; therefore, the reliability and performance of non-GM "add-on" equipment installations must become the responsibility of the installer (dealer or vehicle owner). For this reason, you should evaluate the procedures used in your dealership (and outside sublet shops) to assure that proper steps are being taken to provide sheet metal corrosion protection which could be affected by the installation of such "add-on" equipment.

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.