4000 RPM B00M/VIBRATION INFORMATION

VEHICLES AFFECTED: 1982 "F" SERIES VEHICLE EQUIPPED WITH 2.5L ENGINE AND MANUAL TRANSMISSION SOME 1982 "F" SERIES VEHICLES WITH 4-CYLINDER ENGINE AND MANUAL TRANSMISSION MAY EXHIBIT A THROTTLE SENSITIVE ENGINE BOOM/VIBRATION WHICH IS HEARD AND FELT AT APPROXIMATELY 4000 RPM. ON SOME VEHICLES, THIS CONDITION MAY BE IMPROVED BY REMOVING THE TRANSMISSION DAMPER. IF THE DAMPER IS REMOVED, A SPACER (PART NUMBER 10018110) MUST BE INSTALLED BETWEEN THE TORQUE ARM BRACKET AND THE TRANSMISSION (SEE ILLUSTRATION). 1.SPACER 10018110 2.TORQUE ARM. 3.DAMPER ASM. 4.TRANSMISSION

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.