---------- Some 1988-92 Regals may experience a rattle or buzz type noise which seems to come from the instrument panel area in front of the driver.
------ A vibration in the vacuum check valve on the power brake booster.
----------- To eliminate this noise, install a new vacuum check valve and rubber grommet kit, P/N 18018978.
Parts are currently available from GMSPO.
Labor Operation Number: T1812 Labor Time: 0.2 Hour
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.