NEW HYDRAULIC ENGINE MOUNTS CORRECT LOW SPEED RATTLE

VEHICLES AFFECTED: 1985 'A' and 'X' Cars Using Chevrolet LE2 and LB6 V6 Engines, Pontiac LR8 L4 Engines, and Buick LN3 and LK9 V6 Engines ---------------------------------------------

Some 1985 vehicles may experience a rattle type noise from the engine compartment which may be caused by the hydraulic engine mount (see illustration). This condition may be corrected by the installation of a new mount.

To repair vehicles experiencing this condition, use the mounts as listed on the following chart:

COLOUR NEW P/N CODE USAGE ------- ------ ----- 17983733 White Chevrolet 'A' and 'X' Car With LB6 and LE2 V6 Engine and LR8 L4 Engine With Manual Transmission

Pontiac 'A' Car With LB6 and LE2 V6 Engine

Oldsmobile and Buick 'A' Car With LE2 V6 Engine

Buick 'X' Car With LB6 and LE2 V6 Engine

17983732 Purple Chevrolet 'A' and 'X' Car With LR8 L4 Engine With Automatic Transmission

Pontiac, Oldsmobile, and Buick 'A' Car With LR8 L4 Engine

Buick 'X' Car With LR8 L4 Engine

Oldsmobile and Buick 'A' Car With LK9 and LN3 V6 Engine

The procedures to be followed for this repair are detailed in the appropriate section of the Service Manual. Use applicable labour operation number and labour times.

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.