REVISED PISTON FIT STANDARD PISTON SIZE SPECS.

VEHICLES AFFECTED: 1982-1984 'J' Series Equipped With 1.8L OHC Engine

Only one standard size service piston is available for the 1.8L OHC engine. As a result, in some cases it may be necessary to lightly hone the cylinder bore to obtain the correct clearance. Clearance specifications are .00 to .02mm (.0000 to .0008 in.)

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.