Steering - Redundant Steering Wheel Controls Inoperative

89buick06

Bulletin 89-3-13

Date April '89

Ref. No. 89-109-3

Corp. Ref. No. 839007R

Figure 1:

SUBJECT: REDUNDANT STEERING WHEEL CONTROL CONCERNS

MODELS AFFECTED: 1989 REGALS WITH UK3 OPTION

Some customers may comment that the redundant steering wheel control system for the radio is not functioning properly. Vehicles produced before VIN 1445106 are affected.

Some of the symptoms that have been reported include:

- Lights in steering wheel pad buttons flicker or go out for short periods of time.

- Radio will intermittently shut off or change stations.

- Some of the buttons are hard to push.

Unless otherwise noted, each of the following changes should be made to repair affected vehicles:

Step 1. Slip ring brush and spring replacement.

*Replace 4 slip ring brushes and springs in steering column using kit, part number 1046442. (See Figure 1).

Step 2. Steering Wheel Pad Replacement

On vehicles with a steering wheel control pad date coded before 10-1-88 (100188) install a new pad, part number 16061754. The date code is located on the back of the pad and may be seen after the pad is removed.

SERVICE PROCEDURE

Slip Ring Brush and Spring Replacement

1. Disconnect negative battery cable.

2. Remove steering wheel radio control pad.

3. Disconnect plug at cancelling cam, then disconnect horn contact connector.
4. Remove safety retaining ring and wheel nut. Remove steering wheel.

NOTICE: When removing a steering wheel with redundant electronic accessory controls in the hub, care must be taken to avoid damage to electronic circuits. Wheel puller bolts, used with special tool J 1859-03, should be turned into steering hub no more than five complete turns. This will prevent bolt contact with sensitive electronic circuits. Reference Buick bulletin 89-3-6.

5. Remove cancelling cam from turn signal switch.

6. Using pliers, remove four brushes and springs by rocking each brush back and forth while pulling it up and out of position. (See Figure 1) Discard springs and brushes.

IMPORTANT: Make sure loose parts don't fall into column.

7. Insert one new spring into end of each new brush.

8. Position each new spring and brush assembly on turn signal switch as shown. Press down and lock each assembly in position. When all four spring and brush assemblies are locked in position, press down and release each brush to check for proper movement.

9. Install cancelling cam.

10. Install steering wheel, wheel nut, and safety snap ring.

11. Connect horn contact wire and cancelling cam wiring.

12. Check date code on steering wheel pad. If it is before 10-1-88 (100188)a new pad is required.

13. Install steering wheel control pad.

14. Reconnect negative battery cable.
WARRANTY INFORMATION

Labor Operation Number: T1429
Labor Time: 0.4 Hours
Trouble Code: 92