FRT. ENGINE MOUNT RATTLE (REPLACE WITH UPDATED MOUNT)

SUBJECT: FRONT ENGINE MOUNT RATTLE (REPLACE FRONT ENGINE MOUNT WITH NEW UPDATED MOUNT)

VEHICLES AFFECTED: 1992 PONTIAC AND BUICK "N" W/2.3L OR 3.3L

Condition:

--------- Front engine mount makes a rattle noise during high impact at low speeds.

Cause:

----- Movement of the decoupler valve in the hydraulic mount is structurally transmitted into the passenger compartment.

Correction:

---------- Replace the front engine mount with updated engine mount. See Parts Information for updated part numbers.

Service Information:

Refer to applicable 1992 Service Manual, Section 6A7, for repair procedure. Vehicles that may have the engine mount rattle noise are 1992 N cars from Start of Production to Vehicle Identification Number breakpoint listed below by division.

Breakpoints:

----------- Division From TO -------- ---- -- Pontiac SOP NC200515 Buick SOP NC600595

Parts Information:

Engine VIN Part Number Description ---------- ----------- ----------- D 22112675 Mount, Front Engine N 22112676 Mount, Front Engine

Warranty Information:

For vehicles being repaired under warranty use:

Labour Operation Number: J1506 (VIN D) J1502 (VIN N) Labour Time: 1.0 Hour (VIN D) 0.6 Hour (VIN N)

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.