INFO ON 1991 PARK AVE./ULTRA PRODUCT ENHANCEMENT

SUBJECT: INFORMATION ON PRODUCT ENHANCEMENTS

MODELS AFFECTED: 1991 PARK AVENUE/ULTRA

Even as Buick was introducing them, the new restyled and improved 1991 Park Avenue/Ultras were being continually evaluated and scrutinized to see if further enhancements could be made for even greater customer satisfaction. Every attempt was made to give owners even more than they had expected from this already great vehicle.

Dealers were advised of these enhancements in previous bulletins. In order to summarize the more significant items in one location, we are re-issuing those bulletins with an easy to understand recap, so you will be able to quickly locate an item that may need to be corrected in the event of an owner's concern. By doing this, we believe that greater owner satisfaction can be achieved since none of the previously released dealer bulletins would be overlooked.

We are extremely proud of our entire Buick line, and particularly of our Park Avenue/Ultra, which we believe are some of the finest automobiles in the industry.

We know that you share this pride with us and will strive to make the Park Avenue/Ultra owner experience the very best in the industry.

1991 PARK AVENUE/ULTRA

SIGNIFICANT PRODUCT ENHANCEMENT ITEMS ARE LISTED BELOW ALONG WITH THE BREAKPOINT

COPIES OF THE RE-ISSUED BULLETINS ARE ATTACHED

(WENTZVILLE PLANT) INCLUSIVE MANUFACTURING

DATES BULLETIN OTHER DESCRIPTIVE INFORMATION FROM TO NUMBERS TO PROPERLY IDENTIFY VEHICLES ----------------- -------- ------------------------------- M1600001 M1708435 91-1-3A OUTSIDE AIR TEMP. SENSOR: CJ2 SORP 07/11/91 AUTOMATIC AIR CONDITIONING

M1600001 M1675000 91-1-16 IN CAR SENSOR SEAL: CJ2 SORP 03/05/91 AUTOMATIC AIR CONDITIONING

M1600001 M1648100 91-6D-3C OIL PRESSURE SENSOR: OPTION SORP 11/09/90 UB3 - GAGE INSTRUMENT CLUSTER

M1600001 M1691055 91-6D-6 OIL PRESSURE WIRE GROUNDING OUT: SORP 05/15/91 ALL VEHICLES

M1600001 M1680640 91-8-48 OIL LIFE MODULE: WITH OPTION SORP 04/23/91 UB3 - GAGE INSTRUMENT CLUSTER

M1600001 M1626500 91-8-50 & REMOTE KEYLESS ENTRY SYSTEM: SORP 09/19/90 91-10-37 OPTION AUO

M1600001 M1713362 92-10-12 UPPER WINDSHIELD REVEAL MOLDING: SORP 08/02/91 ALL VEHICLES

M1648731 M1698080 91-10-36 BACKLITE REVEAL MOLDING: 12/03/90 06/11/91 ALL VEHICLES

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.