Replace Turn Signal Switch?

On Cadillac Car models 1990 to 1998 the procedure is for
GM Cadillac Deville/Fleetwood/ELDORADO/Seville car models.

In this chapter the details are mentioned for replace turn signal switch for above mentioned late and early Cadillac car models.

The procedure with details and diagrams is as follows:-----

Deville, Eldorado, Seville, and Fleetwood-Early Models

1. Disable the SIR system.
   1. On Deville and Fleetwood, remove the left lower sound insulator. On Eldorado and Seville, remove the left side sound insulator.
   2. Remove the Connector Position Assurance (CPA) and detach the yellow 2-way connector at the base of the steering column.
   3. Remove the steering wheel.
   4. Make sure the ignition switch is in the LOCK position to prevent the SIR coil assembly from going off-center.
2. Remove the SIR coil assembly retaining ring and the coil assembly. Allow the coil to hang freely.

WARNING

The SIR coil assembly will become off-center if the steering column is separated from the steering gear and is allowed to rotate or if the centering spring is pushed down, letting the hub rotate while the coil is removed from the column.

3. Remove the wave washer.
4. Use tool J-23653-C or equivalents, to depress the shaft lock, then remove and discard the shaft lock retaining ring.
5. Remove the shaft lock.
6. Remove the turn signal canceling cam assembly.
7. Remove the upper bearing spring, upper bearing inner race seat and inner race.
8. Move the turn signal switch to the RIGHT TURN position.
9. On Deville, Fleetwood, and 1990 Eldorado, and Seville, remove the multi-function turn signal lever as follows:
   1. Make sure the lever is in the OFF position.
   2. Remove the access cover from the steering column housing.
   3. Detach the cruise control wiring connector. Note the position of the connector when installed in the column.
   4. Pull the lever straight out of the turn signal switch.
10. On Eldorado and Seville, remove the multi-function turn signal lever as follows:
    1. On 1992-93 vehicles, slide the connector cover toward the front of the vehicle.
    2. Unplug the electrical connector. On 1991 vehicles, note the position of the connector when installed in the column.
    3. Push the lever straight in, rotate clockwise ¹ / ₄ turn and pull the lever out of the switch.
11. On Deville, Fleetwood, and Eldorado and Seville, remove the screw, button, spring, and hazard warning switch knob.
12. On Deville and Fleetwood, remove the one signal switch arm retaining screw. On Eldorado and Seville, remove the 2 signal switch arm retaining screws. Remove the signal switch arm.
13. Remove the turn signal switch retaining screws.
14. Remove the wiring protector and detach the turn signal switch connector.
15. Gently pull the wire harness through the column and remove the turn signal switch.

To install:

16. Route the turn signal switch wire harness through the column and attach the electrical connector. Install the wiring connector.
17. Position the turn signal switch and install the retaining screws. Tighten the screws to 30 inch lbs. (3.4 Nm).
18. If equipped, install the signal switch arm and tighten the retaining screw(s) to 20 inch lbs. (2.3 Nm).
19. If removed, install the hazard warning switch knob, spring, button, and screw.
20. On 1991-93 Eldorado and Seville, install the multi-function turn signal lever as follows:
    1. Route the harness and attach the electrical connector.
    2. Push the lever straight in and rotate counterclockwise ¹ / ₄ turn to lock into position.
    3. On 1992-93 vehicles, reposition the connector cover.
21. On Deville, Fleetwood, and 1990 Eldorado and Seville, install the multi-function turn signal lever as follows:

 

Fig. Removing the SIR coil assembly

1. Make sure the lever is in the OFF position.
2. Push the lever into the turn signal switch.
3. Connect the cruise control wiring connector.
4. Install the access cover to the steering column housing.

22. Install the inner race, upper bearing inner race seat, and upper bearing spring.

 

Fig. Removing the shaft lock retaining ring

23. Install the turn signal canceling cam assembly and lubricate with suitable grease.
24. Position the shaft lock. Use tool J-23653-C or equivalents, to depress the shaft lock, then install a new shaft lock retaining ring. The ring must be firmly seated in the groove on the shaft.

 

Fig. Removing the upper shaft components

25. Install the wave washer.
26. If the SIR coil is off-center, proceed as follows:
    1. On early Deville, Fleetwood, Eldorado, and Seville, set the steering shaft so that the block teeth on the upper steering shaft are at the 12 o'clock and 6 o'clock positions. The alignment mark at the end of the shaft should be at the 12 o'clock position and the vehicle wheels straight ahead. Turn the ignition switch to the LOCK position.

Fig. Removing the multi-function turn signal lever-1992-93 Eldorado and Seville shown, others similar

1. On late model Deville, Fleetwood, Eldorado, and Seville, set the steering shaft so that the block tooth on the upper steering shaft is at the 12 o'clock position. The vehicle wheels should be straight ahead. Turn the ignition switch to the LOCK position.
2. Remove the SIR coil assembly.

Fig. Removing the turn signal switch

1. Hold the coil assembly with the clear bottom up to see the coil ribbon. There are 2 different types of coils: one rotates clockwise and the other rotates counterclockwise.
2. While holding the coil assembly, depress the spring lock to rotate the hub in the direction of the arrow until it stops. The coil ribbon should be wound up snug against the center hub.
3. Rotate the coil hub in the opposite direction approximately 2 ¹ / ₂ turns. Release the spring lock between the locking tabs in front of the arrow.

NOTE

If a new SIR coil assembly is being installed, assemble the pre-centered coil assembly to the steering column. Remove the centering tab and dispose.

Fig. Turn signal switch installed-1992-93 Eldorado and Seville shown, others similar

27. Install the SIR coil assembly, using the horn tower on the canceling cam assembly and the projection on the housing cover for alignment.
28. Install the coil assembly retaining ring. The ring must be firmly seated in the groove on the shaft.

Fig. Centering the SIR coil assembly

WARNING

Gently pull the coil assembly and turn signal harness wires to remove any slack or kinks that may be inside the steering column. Failure to do so may cause damage to the wire harness.

29. Install the steering wheel.

Fig. SIR coil assembly installed-1990 Deville and Fleetwood, and 1990-91 Eldorado and Seville

30. Enable the SIR system as follows:
    1. Connect the yellow 2-way connector at the base of the steering column and install the CPA.
    2. On Deville and Fleetwood, install the left lower sound insulator. On Eldorado and Seville, install the left side sound insulator.

Fig. SIR coil assembly installed-1991-93 Deville and Fleetwood, and 1992-93 Eldorado and Seville

1. Install the SIR fuse.
2. Connect the negative battery cable.
3. Turn the ignition switch to RUN . Verify that the "INFLATABLE RESTRAINT" indicator light flashes 7-9 times and then remains OFF. If the light does not function as specified, there is a fault in the SIR system.

Deville, Eldorado, and Fleetwood-Late Models

1. Disable the SIR system.
2. Remove the inflator module and the steering wheel.
3. Disconnect the negative battery cable.
4. Remove the coil assembly retaining ring. Remove the SIR coil assembly and allow it to hang freely.
5. Remove the wave washer.
6. Install special tool J 23653-C to push down the shaft lock and remove the shaft lock-bearing retainer.
7. Remove the shaft lock, the special tool, the turn signal canceling cam assembly, and the upper bearing spring.

Fig. Wire harness route through the column shown here

8. Remove the upper bearing inner race seat, and the inner race.
9. Move the turn signal to the "RIGHT TURN" position.
10. Remove the multi-function lever and hazard knob assembly.
11. Carefully take out the 2 screws and the signal switch arm.
12. Remove the turn signal switch screws.
13. Detach the turn signal switch connector from the bulkhead connector.
14. Remove the wiring protector, and gently pull the wire harness through the steering column to remove the turn signal switch.

To install:

15. Feed the turn signal switch assembly wire harness through the steering column.
16. Attact the switch connector to the bulkhead connector.
17. Install the turn signal switch assembly an tighten the screws to 31 inch lbs. (3.5 Nm).
18. Replace the switch arm and tighten the two screws. Tighten the top screw to 27 inch lbs. (3 Nm). Tighten the bottom screw to 22 inch lbs. (2.5 Nm).
19. Install the Hazard knob assembly and multi-function lever.
20. Install the inner race, upper bearing inner race seat, and upper bearing spring. Lubricate the canceling cam assembly and install it.
21. Temporaily install the special tool J 23653-C and push down the shaft lock until it is possible to install a new shaft lock bearing retainer. Ensure the bearing retainer is firmly seated in the groove on the shaft.

NOTE

Set the steering shaft so that block tooth on the upper steering shaft is at the 12 o'clock position, the wheels on the vehicle should be straight ahead, then set the ignition switch to the "LOCK" position, to ensure no damage will occur to the coil.

22. Install the wave washer.

WARNING

The SIR coil assembly wires must be kept tight with no slack while installing the SIR coil assembly. Failure to do so may cause wires to be kinked near the shaft lock area and cut when the steering wheel is turned.

Fig. Routing the coil assembly wires

23. Ensure that coil assembly hub is centered.

Fig. Centering the coil assembly

24. Pull the wire tight while positioning the SIR coil to the steering shaft.
25. Align the opening in the coil with the horn tower and "locating bump" between the two tabs on the housing cover.
26. Seat the coil assembly into the steering column. Attach the coil assembly retaining ring. Ensure the ring is firmly seated in the groove on the shaft.

WARNING

Gently pull the lower coil assembly, turn signal and pivot and pulse wires t remove any wire kinks that may be inside the steering column assembly. Failure to do so may cause damage to the wire harness.

27. Install the wiring protector.
28. Install the remaining components in the reverse order of the removal procedure.

Seville

NOTE

Some special tools may be necessary to perform this repair procedure. They include: J 41352 and J 42640.

1. Disconnect the negative battery cable.
2. Disable the SIR system.
3. Remove the steering wheel.
4. Remove the knee bolster.
5. Remove the two nuts (1) securing the steering column.

Fig. Dropping the steering column by removing the two nuts

Fig. Disengaging the wire harness (1) from the retaining strap (2)

6. Lower the column, remove the tilt handle lever.
7. Remove the upper and lower shroud.
8. Remove the two wire harness straps. Remove one wire harness strap from the steering column tilt head assembly.
9. Remove the wire harness assembly from the wire harness strap.

These details will help.

Thanks.           

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Car repair guide?

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