How do I replace the ignition switch?

is the lock assembly in the car or out?
there are 2 jobs here, removing the assembly
and after that, attacking the lock it self.???????

any lock smith can rebuild the lock, proper
it has pins that are pressed out.
it can even be rekeyed.

the remove assembly is covered in the FSM, no books?
alldata.com covers that.
it really is an Isuzu. impulse.

my guess is its job 1, assembly out.
so toss coin lands on job1
(on most cars, steering wheel must be removed)
once that is done, its obvious from there, right? that clamp there with the antitamper screws? then must be removed. and replaced new..

a rare car , and even more one that runs....

here is the online FSM answer

1. Remove the negative battery cable.
2. Remove the steering wheel.
3. Remove the combination switch assembly.
4. Turn the key to the OFFposition, depress the retaining pin and remove the ignition lock cylinder from the switch.
5. Disconnect the electrical connector from the ignition switch.
6. Remove the snapring and spacer collar from the steering shaft.
7. Disconnect the back drive cable from the ignition switch.
8. Remove the ignition switch bolts and the ignition switch from the steering column.

now back in?

1. Install the ignition switch to the steering column and tighten the bolts.
2. Connect the back drive cable to the ignition switch.
3. Install the spacer collar and the snapring to the steering shaft.
4. Connect the electrical connector to the ignition switch.
5. Install the lock cylinder into the switch.
6. Install the turn signal switch screws and the turn signal switch.
7. Install the four screws and the coil assembly to the turn signal switch.
8. Connect the coil assembly wiring harness to the turn signal switch.
9. Install the two piece steering column cover and the two piece steering column cover screws.
10. Raise the steering column and install the upper steering column mounting bolts. Tighten the bolts to 18 ft. lbs. (24 Nm).
11. Install the left lower dash trim panel and tighten the lower dash trim panel screws.
12. Install the lap air deflector and tighten the lap air deflector screws.
13. Install the knee pad assembly and tighten the five screws, the bolt and the nut attaching the assembly.
14. Install the engine hood opener cable.
15. Install the engine hood opener and tighten the two screws.
16. Connect the electrical connector to the cigar lighter bezel and install the bezel.
17. Connect the electrical connector to the left switch bezel and install the bezel.
18. Install the steering wheel.
19. Connect the negative battery terminal to the battery.

that?

you need haynes repair manual for 1993 suburban it has photos and information you need to help you replace ignition switch.i am mechanic i use haynes,chiltons and gm manuals.if you are a home mechanic do it your self you need haynes repair manual it has step by step instructions to remove the steering wheel and remove lower steering column reason i say need haynes repair because your steering wheel has a air bag in it you need to see how to remove air bag in steering wheel you need to read through the entire ignition switch removal procedure if you are going to replace ignition switch with keylock cylinder you will also need steering wheel puller. you need a tool compress lock plate to remove lock plate retaining ring from steering shaft in order to get to the ignition switch in the steering column below turn signal switch.

If you're having trouble starting your car and you've been through troubleshooting the starter and alternator, it may be time to replace the ignition switch. Though this is a job best suited for a professional mechanic, if you're willing to take it on, here's how to replace the ignition switch in your car.
Instructions:
1.Disconnect the negative battery cable from the terminal on the battery. Remove the upper and lower steering column covers by unscrewing or unclipping them.
2.Remove the steering wheel by lifting off the center cover, disconnecting the horn wire and removing the retaining nut and washer. Make a mark on the steering wheel spline and the wheel itself so you can line it back up precisely. Pull the steering wheel straight back to remove from the shaft.
3.Take off windshield wiper and turn signal switches by pulling them off as you did the steering wheel and disconnect the wiring. Slide the spacer sleeve off of the steering column.
4. Unscrew the ignition switch mounting screws. Pull out the ignition switch. Disconnect the wiring connector from back of the ignition switch. Simply loosen the tabs and pull it out.
5. Insert your key into the ignition. Turn the ignition switch to the locked position. Depress the retaining pin with a small screwdriver and turn the key to the Off position to free the cylinder. Once it is free, turn the key to lock position and remove the key and key cylinder.
6. Install your old key cylinder into the new ignition switch assembly. Make sure the contacts in the cylinder and assembly line up. Reattach wiring to ignition switch, slide it into place, screw in mounting screws and reassemble steering wheel and switches.

This is not an easy repair due to anit theft requirements. need to chisel off bolts.

Section 11-04: Steering Column 1997 Probe Workshop Manual REMOVAL AND INSTALLATION Procedure revision date: 05/17/2000
Ignition Switch Lock Cylinder Removal

1. Remove the steering wheel (3600). Refer to the procedure in this section.
   

1. Remove the four lower steering column shroud screws.
   
   
   
   
   

1. Separate the upper and lower steering column shrouds.
   

1. Remove the ignition switch lock cylinder illumination miniature bulb from the lower steering column shroud.
   

1. Remove the upper and lower steering column shrouds.
   

1. Remove the multi-function switch (13K359). Refer to Section 11-05 for the removal and installation procedure.
   

1. If equipped, remove the ignition/shifter interlock cable screw.
   

1. Disconnect the ignition/shifter interlock cable (3F719) from ignition switch lock cylinder (11582).
   

1. Use a chisel to remove the two ignition switch lock cylinder bolts.
   

1. Remove the ignition switch lock cylinder from the steering column.
   

1. Disconnect the ignition key reminder switch electrical connector.
   

1. If necessary, remove the ignition key reminder switch.
   
   
   
   
   

Installation
NOTE: Use new ignition switch lock cylinder bolts. Tighten the bolts until the bolt heads break off. Check for proper ignition switch (11572) operation.

To install, reverse the removal procedure.

Ignition Switch/Lock Cylinder REMOVAL AND INSTALLATION CAUTION
Some models covered by this manual 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 Section 6. The ignition lock is an integral component of the steering lock mechanism. If the ignition lock must be replaced, perform the following procedure. Fig. 1: Exploded view of the ignition switch/lock cylinder assembly
Fig. 2: Remove the break-off head retaining bolts by chiseling a slot in the bolt, then removing them with a screwdriver
Millenia

1. Disconnect the negative battery cable.
2. Properly disarm the air bag system.
3. Remove the rear console box, brake boot and center panel (disconnect the harness connectors).
4. Remove the rear console.
5. Remove the undercover, glove compartment and compartment cover.
6. Remove the upper and lower steering column covers.
7. Tilt the steering shaft down. Remove the cap and panel light control switch. Remove the meter hood mounting screws. Pull the meter hood forward to disengage the clips.
8. Remove the instrument cluster,
9. Remove the drivers side air bag and the steering wheel.
10. Remove the combination switch.
11. Remove the passenger side air bag mounting bolts, electrical connector and remove the air bag module.
12. Remove the hood panel release lever. Pull the side panel forward to disengage the clips, remove the side panel.
13. Remove the side covers.
14. Remove the dashboard mounting bolts, pull the dashboard up and forward and remove.
15. Remove the steering shaft.
16. Remove the screw and the ignition switch and disconnect the ignition switch connector.
17. Using a chisel and a hammer make a groove in the heads of the steering lock mounting bolts. Remove the bolts and the steering lock assembly. To install:
    
18. Install the steering lock mechanism to the steering column jacket. Make sure that the lock operates correctly. Install new mounting bolts and tighten the bolts till the heads break off.
19. Reconnect the ignition switch connector to the ignition switch and install the ignition switch to the steering lock mechanism with the screw.
20. Replace the dashboard close to its mounts and connect all harness connectors. Install all mounting bolts. Torque to 14-18 ft. lbs. (19-25 Nm).
21. Install the side covers.
22. Instal the side panels.
23. Install the steering shaft and torque the mounting bolts to 12-16 ft. lbs. (16-22 Nm).
24. Connect the passenger side air bag module electrical connector and replace the module to the dash and install the mounting bolts.
25. Install the combination switch on the steering column.
26. Install the steering wheel and drivers side air bag module.
27. Install the instrument cluster.
28. Install the meter hood.
29. Install the upper and lower steering column covers.
30. Install the glove compartment cover, compartment and the undercover.
31. Install the rear console, bracket, center panel, brake lever boot and the rear console box.
32. Reconnect the negative battery cable,
33. Place the steering column securely on a workbench. Use a chisel and hammer to make slots in the head of the lock screws. Remove the screws.

Except Millenia

1. Disconnect the negative battery cable.
2. If equipped, disarm and remove the air bag.
3. Remove the steering wheel and the combination switch.
4. Remove the steering column by performing the following:
   1. Remove the driver's side under dash covers.
   2. If equipped, disconnect the key interlock cable from the steering column.
   3. Detach any remaining electrical wire harness connectors from the column.
   4. Remove the upper column-to-dash mounting bolts. Support the steering column.
   5. Remove the intermediate shaft-to-steering column shaft coupling bolt and remove the steering column-to-firewall bracket bolts/nuts.
   6. Remove the steering column from the vehicle.
5. Place the steering column securely on a workbench. Use a chisel and hammer to make slots in the head of the lock screws. Remove the screws.
6. Remove the ignition lock assembly. To install:
   
7. Position the ignition lock and bracket on the steering column.
8. Install the new screws until the head twists off. Make sure the lock operates properly while tightening the new locking screws.
9. The remainder of the installation is the reverse of the removal procedure.

THE TROUBLE IS YOUR IGNITION SWITCH. THIS IS NOT THE IGNITION KEY & LOCK CYLINDER. THEY WORK TOGETHER, BUT THE ELECTRICAL IGNITION SWITCH IS ON THE STEERING COLUMN UNDER THE DASH. YOU HAVE TO REMOVE THE LOWER DASH PANEL & LOWER THE STEERING COLUMN. TO GET TO THE IGNITION SWITCH. GET A NEW IGNITION SWITCH,TO SEE WHAT IT LOOKS LIKE. THE DIMMER SWITCH FOR THE HEADLIGHTS. IS MOUNTED PIGGY/BACK ON THE IGNITION SWITCH. IF YOU HAVE NEVER DONE THIS IT'S PRETTY TRICKY. THE ROD GOING IN THE DIMMER SWITCH WILL HAVE TO BE SECURED. IF IT FALLS OUT, THE STEERING WHEEL & A LOT OF OTHER NIGHTMARE STUFF WILL HAVE TO BE REMOVED, TO PUT THE ROD BACK IN PLACE. BOTH SWITCHES ARE ADJUSTABLE SO EVERYTHING WILL WORK RIGHT.

Ignition Switch Removal & Installation To Remove:

1. Disconnect battery negative cable.
2. Disarm air bag system.
3. Remove driver air bag module.
4. Loosen screw and lift horn pad to remove.
5. Remove lock nut and washer. CAUTION
   Do not hammer on steering wheel. Damage can occur to the energy absorbing portion of the steering column.
   
6. Pull dynamic damper forward and lift up to remove.
7. Remove steering wheel.
8. Remove steering column shrouds.
9. Remove lower cover.
10. Remove multifunction switch.
11. Remove entire lower portion of dash.
12. Remove mounting fasteners and lower steering column.
13. Remove bolts and separate ignition switch from steering column.

To Install:

1. Install ignition switch to steering column and install bolts.
2. Raise steering column and install mounting fasteners.
3. Install lower portion of dash.
4. Install multifunction switch.
5. Install lower cover.
6. Install steering column shrouds.
7. Install steering wheel.
8. Install dynamic damper.
9. Install washer and lock nut.
10. Lift horn pad and install screw.
11. Install driver air bag module.
12. Connect battery negative cable.

Remove lower dash panel, under steering wheel, there will be a bracket that holds steering wheel, remove both 15mm nut's that point up, not the 13mm bolt's the screw into the colum , steering wheel will come down enough where you will see the ignition switch on the top side of the colum, the switch will be screw to the colum with the head light dimer switch.

Removal & Installation The ignition switch or warning switch can be replaced without removing the steering lock assembly. The ignition switch is on the back of the assembly and the warning switch on the side.

1. Disconnect the negative battery cable and insulate the terminal end.
   

CAUTION The air bag system must be disarmed before removing the steering wheel. Failure to do so may cause accidental deployment, property damage or personal injury.

1. Remove the steering wheel and the steering column upper and lower covers.
   
2. Remove the spiral cable assembly.
   

View of the steering lock and ignition switch assembly

1. Remove the combination switch from the steering column.
   
2. Remove steering column support nuts and lower the steering column.
   
3. Disconnect the ignition switch wiring and interlock cable (if equipped).
   
4. Remove the bolts that secure the steering lock and remove steering lock assembly.
   

To install:

1. Install the steering lock assembly and secure with new shear type bolts.
   
2. Connect the ignition switch wiring harness and the interlock cable.
   
3. Raise the steering column and secure with mounting nuts.
   
4. Install the spiral cable assembly.
   
5. Install the combination switch, steering column covers, and the steering wheel.
   
6. Connect the negative battery cable and enable the air bag system.
   

key switch,remove center cap and pull steering wheel off with wheel puller.disconect horn,blinkers assembly.push pin remove ignition. ignition switch, remove panel under dash un bolt steering colum lower to seat un screw ignition from top steering colum un hook rod,un plug harnees put new one on put back together