CAMPAIGN: INOP. ENG. COOL FAN A/C SYS/FAULTY C/F RELAYS

Model and Year: 1982-83 Celebrity and Citation Models Equipped with RPO LR8 (2.5L Engines) and RPO C60 Air Conditioning

Some late 1982 and all 1983 Celebrity and Citation models equipped with RPO LR8 (2.5L engines) and RPO C60 air conditioning were assembled with engine cooling fan relays which could cause the engine cooling fan and air conditioning system to be inoperative.

DEALER ACTION

To prevent the possibility of this occurring, dealers are to replace the cooling fan relays on all involved vehicles.

VEHICLES INVOLVED

Some late 1982 and all 1983 Celebrity and Citation models equipped with RPO LR8 (2.5L engines) and RPO C60 air conditioning and built within the following vehicle identification number breakpoints:

PLANT MODEL YEAR FROM THROUGH ------ ----- ---- ---- ------- Tarrytown Citation 1982 CT153003 EOP Tarrytown Citation 1983 SOP EOP Oklahoma City Citation 1983 SOP EOP Oshawa Celebrity 1982 C1416047 EOP Oshawa Celebrity 1983 SOP EOP Oklahoma City Celebrity 1983 SOP EOP Framingham Celebrity 1983 SOP EOP

Involved vehicles have been identified by Vehicle Identification Number Computer Listings. Computer listings contain the complete Vehicle Iden- tification 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 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 regis- tration 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 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.

SERVICE PROCEDURE

PART I - REPLACEMENT OF COOLING FAN RELY

Removal

1. Disconnect negative battery cable.

2. Unplug connector from cooling fam relay (see Figure 1).

3. Remove two cooling fan relay retainers (save retainers) and remove relay.

INSTALLATION

Refer to Parts Information section of this bulletin to obtain new relay (P/N 10033118).

1. Sequentially change wire location in connector as shown in Figure 2.

2. Be sure to insert plastic plug into cavity "D" as shown in Figure 2.

3. Install new relay P/N 10033118 using the two retainers removed from old relay.

4. Snap connector into relay. Be sure connector seats properly.

5. Reconnect negative battery cable.

PART II - COOLING FAN OPERATION SHOULD BE CHECKED AFTER INSTALLATION OF THE NEW RELAY USING THE FOLLOWING PROCEDURE

1. Engine should be cool enough that cooling fan is not running. (Engine cooling fan will operate if the engine temperature switch senses coolan- at or above 230 DEG F (110 DEG C).

2. Turn ignition switch to "ON" position only. DO NOT START ENGINE.

3. Operate the air control lever of the A/C control. Engine cooling fan should be operating when lever is in the A/C positions of MAX, NORM, or BI-LEVEL. (The engine cooling fan will also operate in the Defrost position on 1982-1983 Celebrity and Citation models that include an additional rely, added for engine cooling fan operation.

4. If engine cooling fan does not operate as outlined in Step 3 above, re-check for proper installation of cooling fan relay wiring outlined in PART I - REPLACEMENT OF COOLING FAN RELAY procedure.

5. If relay wiring is correct and engine cooling fan still does not operate, review the normal diagnostic procedures for cooling fan operation in appropriate service manual.

6. Install Campaign Completion label.

PARTS INFORMATION

The relay assembly package required to complete this campaign is to be obtained from WDDGM.

To ensure P/N 10033118 relay will be obtained as soon as possible, it should be ordered from WDDGM on a C.I.O. order with no special instruction code, but order on an advise code (2).

Part Number Model Year Quantity Description ----------- ---------- -------- ----------- 10033118 1982-1983 1 per vehicle Relay Assembly Package

CLAIM INFORMATION

Submit a Product Campaign Claim with the information indicated below:

Parts Failed Parts Failure Labor Labor *Other Count Part No. Allowance Code Operation Hours Hours ----- -------- --------- ---- --------- ----- ----- 1 10033118 00 V2030 .3 .1

DESCRIPTION: Replace relay in accordance with the instructions outlined in this bulletin.

*Campaign Administrative Allowance

Dealers will automatically receive the correct labor and material allowance based on the labor operation performed.

Refer to the Chevrolet Claims Processing Manual for details on Product Campaign Claim submission.

CAMPAIGN IDENTIFICATION LABEL

Each vehicle modified in accordance with the instructions outlined in this Product Campaign Bulletin will require a "Campaign Identification Label". Each label provides a space to include the five digit dealer code of the dealer performing the campaign service. This information may be inserted with a typewriter or ballpoint pen.

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.