Dealer, Owner, & Parts Information
DEALER ACTIONTo prevent the possibility of this condition from occurring on vehicles involved, dealers are to inspect to determine if a vehicle has suspect proportioner valves as instructed in the Technical Procedure of this bulletin. All suspect valves are to be replaced.
DEALER CAMPAIGN RESPONSIBILITY
Dealers are to service all vehicles subject to this campaign at no charge to owners, regardless of mileage, age of vehicle, or ownership, from this time forward.
Whenever a vehicle subject to this campaign is taken into your new or used vehicle inventory, or it is in your dealership for service in the future, you should take the steps necessary to be sure the campaign correction has been made before reselling or releasing the vehicle.
Owners of vehicles recently sold from your new vehicle inventory are to be contacted by the dealer, and arrangements made to make the required modification according to instructions contained in this bulletin.
VEHICLES INVOLVED
Vehicles involved are certain 1983 Centurys, Skylarks and Skyhawks within the following serial numbers:
Model Assembly Plant Beginning Up to and Including
Century Doraville DD408333 DD445796
Century Oklahoma City D6403491 D6412752
Skyhawk Leeds DK411090 DK433771
Skylark Willow Run DW425910 DW458221
Skylark Tarrytown DT403790 DT407043
DEALER MATERIAL
If your dealership has vehicles involved in this campaign, you will receive the following items:
- List of all vehicles involved in their campaign shipped to your dealership.
- One (1) campaign identification label per vehicle involved.
Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, Owner Names and Address Data, and are furnished to the involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to follow-up with owners involved in this campaign.
These listings may contain owner names and addresses obtained from State Motor Vehicle Registration Records. The use of such motor vehicle registration data for any other purpose is a violation of law in several states. Accordingly, you are urged to limit the use of this listing for the follow-up necessary to complete this campaign.
TRANSFER OF VEHICLE
If a vehicle has been transferred or sold to another location, please forward Campaign Identification Label and vehicle information for this vehicle to your Buick Zone Office for handling with the proper dealer.
CHANGE OF OWNER INFORMATION
Dealers are to use the Dealer Communication System (D.C.S.) to provide Buick Motor Division with subsequent Buick Owner Information. By reporting a change of owner name or address of a vehicle in Campaign status over the D.C.S., the need to send in an S-866 Form for that vehicle is eliminated. Terminal input instructions are covered in the D.C.S. Manual under Section 9, Page 9-J01A and B.
OWNER NOTIFICATION
Owners of vehicles involved in this campaign will be notified by Buick Motor Division (see copy of owner letter included with this Bulletin).
PARTS INFORMATION
The parts for this campaign are to be obtained from WDDGM as required. Refer to chart to obtain correct valve for a vehicle.
PART NUMBER & (I.D. CODE ON VALVE BODY)
Front Location Rear Location
Model Usage 10 mm 13 mm
Century *With JA2 (Hvy Duty 18009966(FJ) 18009967 (RJ)
Brake System
Century **With JA1 (Lt. Duty 18008570(FK) 18008571 (RK)
Brake System)
Skylark ALL 18008570(FK) 18008571 (RK)
Skyhawk ALL 18009966(FJ) 18009967 (RJ)
*JA2 = Models with 2.5L engine and GVMR over 1784 KG, and models with 3.0L and 4.3L diesel engines
**JA1 = Models with 2.5L engine and GVWR under 1784 KG (GVWR can be found on the certification label located inside the driver's door.)
To ensure this part will be obtained as soon as possible, it should be ordered on a C.I.O. order with no special instruction code, but order on an advise code (2).
NO SUSPECT VALVES WERE SUPPLIED AS SERVICE PARTS. NO SUSPECT VALVES WERE SUPPLIED AS CAMPAIGN PARTS.
A quantity of known good proportioner valves with the same machine marks as those being replaced, but with date codes higher than the suspect range, were used to provide campaign parts. Use of valves that look the same as those being replaced has caused confusion at some dealerships.
To eliminate this confusion, and to avoid unnecessary replacement of good valves in the future, the following is recommended:
^ Use any service parts which may be in stock. They are all good valves.
^ Valves received in campaign parts packages, regardless of their machine marks, are okay. Use them on campaign cars as needed.
^ Be sure to install campaign identification labels in each car serviced to avoid unnecessary future replacement of good valves.
^ Do not be concerned with the campaign service valves that you may have, already installed. They are all good valves.