GM Service Manual Online
For 1990-2009 cars only

MOAN OR VIBRATION WITH A/C COMPRESSOR ENGAGED

MOAN OR VIBRATION WITH AIR CONDITIONING RUNNING

VEHICLES AFFECTED: 1985-87 CORVETTE -----------------

Some 1985-87 Corvettes may exhibit a moan or engine vibration when the conditioning compressor is engaged. This condition may be improved by the installation of a power steering pump rear bracket and brace kit, P/N 10077573. Installation instructions are provided in the kit.

Use applicable Labour Operation and Time.

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.