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

Model and Year: 1982-1983 CELEBRITY AND CITATION MODELS EQUIPPED WITH RPO LR8 (2.5L ENGINES) AND RPO C60 AIR CONDITIONING

The following information revises the "Service Procedure" section of Campaign Bulletin 83C19 issued in June, 1984.

SERVICE PROCEDURE

PART I - REPLACEMENT OF COOLING FAN RELAY

Removal

1. Disconnect negative battery cable.

2. Unplug connector from cooling fan 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 coolant at or above 230 DEG F (110 DEG C)).

2. Ground under dash diagnostic connector by jumping TEST terminal B GROUND terminal A.

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

4. Operate the air control level 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 relay, added for engine cooling fan operation).

5. Remove ground specified in Step 2.

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

7. 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.

8. Install Campaign Completion label.

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.