The oil pan gasket on the engines listed above contain a sramped steel core with cork bonded to each side. If the cork comes off, the sharp steel edge will be exposed.
Care should be taken when hardling this gasket to avoid the possibility of personal injury.
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.