Defect Involved

General Motors has determined that a defect which relates to motor vehicle safety exists on some 1983 Chevrolet Celebrity, Citation and Cavalier Model Cars. The brake proportioner valves used on some of these vehicles may break and separate from the master cylinder. This would result in a brake fluid leak and a partial loss of the brake system. These vehicles are equipped with a dual braking system; part of the system will still work and allow the vehicle to be stopped, but over a greater distance. Partial loss of the brake system at a time when minimum stopping distance is required could result in a vehicle crash without prior warning.


VEHICLES INVOLVED

Involved are certain 1983 Chevrolet Celebrity, Citation and Cavalier Models within the following breakpoints:

Plant Model From Through

Oklahoma City Celebrity D6804393 D6822143

Oshawa Celebrity D1808523 D1810818
" " D1814224 D1821141
" " D1824695 D1825832
" " D1829104 D1832015
" " D1835303 D1835695

Oklahoma city Citation D6105795 D6123727

Tarrytown Citation DT116759 DT117791
" " DT118101 DT130791
" " DT131329 DT131796
" " DT132331 DT134312
Lordstown Cavalier D7112022 D7143146

Janesville Cavalier DJ112500 DJ140000


Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Identification Number, owner name and address data, and are furnished to the involved dealers with the campaign bulletin. Owner name and address data furnished will enable dealers to followup 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 to the follow-up necessary to complete this campaign. Any dealer not receiving a computer listing with the campaign bulletin was not shipped any involved vehicles.


OWNER NOTIFICATION

Owners will be notified of this campaign on their vehicles by Chevrolet Motor Division (see copy of Owner Letter included with this bulletin).


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 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.