SPARK PLUG FOULING CHANGE SPARK PLUG TYPE

MODELS AFFECTED: 5.0L V8 ENGINES (VIN CODE Y & 9)

NOTICE: This bulletin supersedes bulletin 83-124. Please discard original bulletin and replace it with this one.

Buick bulletin 83-124, file group 60 #31, advised that 5.0L engines (VIN Code Y) were being built with R46SZ spark plugs and .060" gap. This information was incorrect.

These engines are being built with spark plug R46SX and .080" gap.

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.