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Don 'Mo Lurch'
Don 'Mo Lurch', Auto Mech / Electronics
Category: Chevy
Satisfied Customers: 18600
Experience:  Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
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I have the ignition here to replace the old one.

Resolved Question:

I have the ignition here to replace the old one.
Submitted: 8 years ago.
Category: Chevy
Expert:  Don 'Mo Lurch' replied 8 years ago.

 

 

Ignition Switch :

See Figures 1 and 2

Click image to see an enlarged view
Fig. 1: Exploded view of the ignition and key alarm switch-1996 C/K series

 

  1. Remove the column shroud halves.

  2. Remove the column-to-dash attaching bolts and slowly lower the steering column, making sure that it is supported.

  3. Remove the multi function switch if necessary.

  4. Remove the key alarm switch, if equipped by gently prying the alarm switch retaining clip with a small screwdriver. Rotate the alarm switch 1/4 in. turn and remove.

    1. Make sure that the switch is in the Lock position. If the lock cylinder is out, pull the switch rod up to the stop, then go down one detent.

    2. Disconnect the actuating rod from the switch.

    3. Remove the two screws and the switch.

    To install:

    1. Before installation, make sure the switch is in the Lock position.

    2. Attach the actuating rod to the switch.

    3. Install the switch using the original screws. Tighten the screws to 12 inch. lbs. (1.4 Nm).

    4. Install the key alarm switch, if equipped . Make sure the retaining clip is parallel to the lock cylinder. Rotate the alarm switch 1/4 in. turn until locked in place.

    5. Install the multi function switch if removed

      1. Replace the column. Tighten the nuts to 22 ft. lbs. (29 Nm); the bolts to 20 ft. lbs. (27 Nm).

      2. Install the column shroud halves.

      Click image to see an enlarged view
      Fig. 2: Exploded view of the alarm switch removal-1996 C/K-Series

 

Lock Cylinder :

  1. Disconnect the negative battery cable and disable the SIR system. (see SIR Below)

  2. Remove the upper and lower shroud, air bag module and the steering column.

Click image to see an enlarged view
Fig. 3: Exploded view of the removal of the SIR coil assembly

 

  1. Remove the retaining ring, SIR coil assembly, wave washer.

  2. Remove the shaft lock retaining ring using tool J 23653-SIR or its equivalent to push down the shaft lock shield assembly. Discard the ring.

  3. Remove the shaft lock shield and turn signal cancel cam assembly.

  4. Remove the park lock cable assembly from the lock module assembly.

  5. Remove the key alarm switch, if equipped by gently prying the alarm switch retaining clip with a small prytool. Rotate the alarm switch 1/4 in. turn and remove.

  6. Remove the two tapping screws and the ignition key and alarm assembly. Let the switch hang freely.

    1. Remove the three pan head tapping screws and the lock module assembly.

    2. Remove the backing plate from the module.

     

    Mark the two sector gears at the

    OFF-LOCK position to ensure proper reassembly

    1. Remove the sector gears.

    2. Remove the positioning tab on the end of the lock cylinder using an 1/8 in. burring tool. Remove all burrs from the lock module and cylinder assembly.

    3. Push on the locking tab of the lock cylinder from inside the lock module assembly and remove the lock cylinder.

    To install:

    1. Align the marks on the sector gears and install the gears and the backing plate to the lock module assembly.

    2. Install the lock cylinder set and ensure that the lock module assembly is in the OFF-LOCK position.

    3. Install the key in the lock cylinder and ensure that it is in the OFF-LOCK position.

    4. Line up the locking tab with the slots in the lock module assembly and push the cylinder into position.

    5. Rotate the lock cylinder to the ACC position. The alignment arrows on the sector gears should be pointing towards each other.

    6. Rotate the lock cylinder to the LOCK position. Push the lock bolt in until it is flush and align the lock module assembly with the head assembly and install the lock module assembly.

    7. Install the three pan head screws and tighten to 53 inch. lbs. (6 Nm).

    8. Install the ignition and key alarm switch assembly and the fasteners. Tighten the fasteners to 12 inch. lbs. (1 Nm).

    9. Install the key alarm switch. Make sure the retaining clip is parallel to the lock cylinder. Rotate the alarm switch 1/4 in. turn until locked in place.

    10. Lubricate the lower brass surface of the turn signal cancel cam assembly with synthetic grease and install the assembly.

    11. Align the inner block tooth of the lock plate to block tooth of race and upper shaft assembly and install the assembly.

    12. Install a new shaft lock ring using tool J 23653-SIR and ensure the ring is firmly seated in the groove on the shaft.

    13. Install the center race and upper shaft assembly.

    14. Place the ignition switch to the lock assembly and ensure the coil is centered.

    15. Install the wave washer and the SIR coil assembly.

    16. Install the retaining ring and route the coil wire along the steering column.

    17. Install the wire harness straps to the steering column harness.

    18. Install the park lock cable assembly with the transmission in Park and the ignition switch in the OFF-LOCK position.

    19. Install the upper and lower covers, lock cylinder set and tilt lever (if equipped).

    20. Install the steering column and enable the SIR system. Connect the negative battery cable.

    Click image to see an enlarged view
    Fig. 4: Exploded view of the sector gear timing position (OFF-LOCK)

     

    Click image to see an enlarged view
    Fig. 5: Remove all burrs from the lock module and cylinder assembly

 

SIR:

DISARMING THE SYSTEM

See Figure 1

With the AIR BAG fuse removed and the ignition switch ON, the AIR BAG warning lamp will be on. This is normal and does not indicate any system malfunction.

  1. Turn the steering wheel so that the vehicle's wheels are pointing straight ahead.

  2. Turn the ignition switch to LOCK, remove the key, then disconnect the negative battery cable.

  3. Remove the AIR BAG fuse from the fuse block.

  4. Remove the steering column filler panel.

  5. Disengage the Connector Position Assurance (CPA) and the yellow two way connector located at the base of the steering column.

  6. Connect the negative battery cable.

Click image to see an enlarged view
Fig. 1: Identification of the air bag system electrical connections



ARMING THE SYSTEM

  1. Disconnect the negative battery cable.

  2. Turn the ignition switch to LOCK, then remove the key.

  3. Engage the yellow SIR connector and CPA located at the base of the steering column.

  4. Install the steering column filler panel.

  5. Install the AIR BAG fuse to the fuse block.

  6. Connect the negative battery cable.

  7. Turn the ignition switch to RUN and make sure that the AIR BAG warning lamp flashes seven times and then shuts off. If the warning lamp does not shut off, make sure that the wiring is properly connected. If the light remains on, take the vehicle to a reputable repair facility for service.

Don 'Mo Lurch', Auto Mech / Electronics
Category: Chevy
Satisfied Customers: 18600
Experience: Chevrolet Cert., Heavy Line Mech, Race Shop Owner, Mobile Electronics.
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Don 'Mo Lurch'
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