Condition, Dealer Action, Vehicles Involved, Owner Notification & Dealer List Information

CONDITION

General Motors has determined that a defect which relates to motor vehicle safety exists in certain 1983 Cadillac Cimarrons. Internal corrosion of the Pulsair Check Valve Assembly can permit exhaust gas to flow upstream to the plastic Shut-off Valve possibly melting the valve. It could then be possible for a piece of the melted Shut-Off Valve to be drawn into the air cleaner, and subsequently into the throttle body where it could lodge against the throttle plate. If this condition were to occur, the engine may not return to idle upon release of the accelerator pedal. Although the vehicle can still be stopped with the service brake, loss of accelerator control could result in a vehicle crash without prior warning.


DEALER ACTION

To prevent this condition from occurring, dealers are to inspect and, when necessary, replace the following:

A. Pulsair Check Valve Assembly with an assembly incorporating stainless steel components.

B. Pulsair Shut-Off Valve with a newly designed valve.

Repairs are to be completed per the Vehicles Involved and Service Procedure sections of this bulletin.
VEHICLES INVOLVED

All 1983 Cadillac Cimarrons equipped with either: (A) Automatic Transmission; or, (B) Manual Transmission with California Emissions, within the following VIN range require this Campaign (Cadillac records indicate a total of 12,543 vehicles are affected):

DJ400001 through DJ415012

OWNER NOTIFICATION

OWNERS OF VEHICLES AFFECTED BY THIS CAMPAIGN WILL BE NOTIFIED BY LETTER FROM CADILLAC MOTOR CAR DIVISION. A COPY OF THE OWNER LETTER IS ATTACHED.

DEALER LIST

A list of vehicles involved is enclosed for your follow-up. The list includes: (A) Those vehicles originally sold by you, providing the current owner is located in your zone; and, (B) Those vehicles originally sold outside of your zone whose current owner is located in your area of sales/service responsibility.

This list contains 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 list for the follow-up necessary to complete this campaign. If no list is attached, none of the involved vehicles are known to be in your area.