Service Procedure

Figure 1 - Cooling Fan Relay Location:

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.

Figure 2 - Wire Locations Changes:

Installation

Refer to Parts Information section of this bulletin to obtain new relay (Part Number 10033118).

1. 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 using the two retainers removed from the 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 engine cooling fan is not running. (Engine cooling fan will operate if the engine temperature switch senses coolant at or above 230~F 110~C).

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

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

4. Operate the air control (upper) 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 1982-83 A and X models that include relay Part Number 14078902, added for engine cooling fan operation in Pontiac Technical Bulletin 83-T-30B.)

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. It is important to note that the cooling fan will not operate in the above test modes if the grounding procedure is not used.

CAMPAIGN IDENTIFICATION LABEL:

PART III - INSTALLATION OF CAMPAIGN IDENTIFICATION LABEL

Each vehicle modified in accordance with the instructions outlined in this service procedure will require a campaign identification label. Each label provides a space to include the campaign number, the five digit dealer code of the dealer performing the campaign service, and the date vehicle was campaigned. This information may be inserted with a typewriter or ballpoint pen. Install the label on the radiator baffle where it is readily visible. (Additional campaign labels are available on stationery order as Form 7201-709.)