GM Lumina/Silhouette/Transport APVs 1990-1999 Repair Guide

Turn Signal Switch

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REMOVAL AND INSTALLATION




CAUTION
Some models covered by this guide may be equipped with a Supplemental Restraint System (SRS), which uses an air bag. Whenever working near any of the SRS components, such as the impact sensors, the air bag module, steering column and instrument panel, disable the SRS, as described in Chassis Electrical .

This procedure requires the use of two special tools; a steering wheel puller and a lock plate compressor.

  1. If equipped with an air bag, disable the system as outlined in Chassis Electrical of this repair guide.
  2.  
  3. If not done already, disconnect the negative battery cable.
  4.  
  5. Remove the steering wheel as outlined earlier in this section.
  6.  
  7. Remove the shaft lock cover.
  8.  

See Figure 1

Click image to see an enlarged view

Fig. Fig. 1: Place the ignition in the "LOCK" position to prevent losing the center on the coil assembly. Diagrams shows removing the coil assembly from the shaft.

  1. Remove the shaft lock retaining ring using a suitable lock plate compressor tool to press down the shaft lock. Dispose of the ring.
  2.  

See Figure 2

Click image to see an enlarged view

Fig. Fig. 2: Use a suitable lock plate compressor tool to remove the shaft lock retaining ring

  1. Remove the shaft lock.
  2.  
  3. Remove the turn signal canceling cam assembly.
  4.  
  5. On vehicles without tilt columns, remove the upper bearing spring and thrust washer.
  6.  
  7. On vehicles with tilt columns, remove the upper bearing spring, inner race seat and inner race.
  8.  

See Figure 91098g18

Click image to see an enlarged view

Fig. Fig. 3: Removing the components from the upper shaft to obtain access.

  1. Move the turn signal lever up, into the "right turn" position.
  2.  
  3. Remove the multi-function lever.
  4.  
  5. Remove the hazard knob assembly and the turn signal switch arm retaining screw.
  6.  

See Figure 4

Click image to see an enlarged view

Fig. Fig. 4: Turn signal switch removal preparation

  1. Remove the turn signal switch screws.
  2.  
  3. Remove the wire protector and gently pull the wire harness through the gearshift bowl shroud, gearshift lever bowl, and the steering column housing assembly, and remove the switch assembly.
  4.  

See Figure 5

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Fig. Fig. 5: Removing the turn signal switch

To install:
  1. Feed the turn signal switch wiring harness through the steering column housing assembly, gearshift lever bowl and the gearshift bowl shroud.
  2.  
  3. Install the turn signal switch and retaining screws and tighten to 31 inch lbs. (3.5 Nm).
  4.  
  5. Install the wire protector shield.
  6.  
  7. Install the turn signal switch arm and secure with the retaining screw. Tighten the screw to 20 inch lbs. (2.3 Nm).
  8.  
  9. Install the hazard knob assembly.
  10.  
  11. Install the multi-function lever.
  12.  
  13. On vehicles without tilt columns, install the upper bearing spring, and thrust washer and on vehicles with tilt columns, install the upper bearing spring, inner race seat and inner race.
  14.  
  15. Lubricate with synthetic grease and install the turn signal canceling cam assembly.
  16.  
  17. Install the shaft lock.
  18.  
  19. Install a new shaft lock retaining ring. Align it to the block tooth on the shaft, using a lock plate compressor tool to press down the shaft lock.
  20.  
  21. Install the shaft lock cover.
  22.  
  23. Install the steering wheel, as outlined earlier in this section.
  24.  
  25. Connect the negative battery cable. If equipped, enable the SRS system as outlined in Chassis Electrical of this repair guide.
  26.  

 
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