For 1990-2009 cars

# NEW HYDRAULIC ENGINE MOUNTS CORRECT LOW SPEED RATTLE

#### Models Affected: 1985 Skylarks & Centurys Equipped with 2.5L (Vin Code R) 2.8L (Vin Code X & W) 3.0L (Vin Code E), & 3.8L (Vin Code 3) Engines

The above vehicles are equipped with a new hydraulic engine mount that provides fluid dampening of engine vibration and a smoother highway feel. See illustration.

On some early 1985 vehicles this mount may exhibit a noise that sounds like metal flexing or a loose spot weld and is usually experienced during road impact from tar strips, pot holes, etc. It is only audible at lower driving speeds, and may be extremely hard to isolate. This condition can be repaired by replacing the original mount with the appropriate one from the chart below.

Engine Mount Part # ------ ------------ 2.5L (R) 17983732 2.8L (X , W) 17983733 3.0L (E) 17983731 3.8L (3) 17983731

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.