The enclosed carburetor specification chart replaces chart, Figure 6C2-55 on page 6C2-31 of your 1984 Buick Chassis Service Manual. This change should be kept with your 1984 Service Manual until the correction is made in the first service manual revision.
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.