MAINTENANCE SCHEDULE SERVICE MANUAL OMISSION

VEHICLES AFFECTED: 10-30 Series Light Duty Trucks

Section C, Emissions Control Maintenance Schedule II - All Engine Families Except 18F2HANQR, was erroneously omitted from the 10-30 Series Truck gas engine and Light Duty Emissions schedule shown on Page OB-2 of the 1981 Light Duty Truck Service Manual. This information (Section C) is shown in Fig. 1 and shouldd be added to the 1981 Service Manual to provide complete emission maintenance information.

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.