The steereing and ignitionswitch have locked up.

1. NON TILT WHEEL
2. Remove the steering wheel.
3. Remove the turn signal switch.
4. Unfasten the two screws that release the buzzer switch (if equipped), then remove the switch.

Fig. Fig. 2: Removing the ignition buzzer

1. Remove the retaining screw and lift the ignition lock cylinder lamp out of the way.

Fig. Fig. 3: Ignition key lamp

1. Remove the bearing housing.
2. Detach the coil spring.
3. Remove the lock plate from the shaft.

Fig. Fig. 4: Lock lever plate removal

1. Unfasten the 2 retaining screws and lift the lock lever guide plate to expose the lock cylinder release hole.
2. Insert the key and place the lock cylinder in the LOCK position. Remove the key.
3. Insert a thin punch into the lock cylinder release hole and push inward to release the spring-loaded lock retainer. At the same time, pull the lock cylinder out of the column.

Fig. Fig. 5: Depress the lock plate which will expose the lock cylinder release hole

1. Remove the 3 retaining screws and lift out the ignition switch.

To install:

1. Position the ignition switch in the center detent position (OFF).
2. Place the shift lever in PARK.
3. Feed the wires down through the space between the housing and jacket. Position the switch in the housing and install the 3 retaining screws.

Fig. Fig. 6: Lock levers and spring assembly installed

1. Place the lock cylinder in the LOCK position, and press it into place in the column. It will snap into position.
2. The remainder of assembly is the reverse of disassembly.

CAUTION Disconnect and isolate the negative (ground) battery cable. This will disable the air bag system. Failure to disconnect the battery could result in accidental deployment and possible personal injury. Allow the system capacitor to discharge for two minutes then begin air bag system component removal. To install:

1. Engage the electrical connectors to the ignition switch and make sure the switch locking tabs are fully seated.
2. Before attaching the ignition switch to a tilt steering column, the transmission shifter must be in the PARK position. Also the park lock dowel pin and the column lock flag must be properly indexed before installing the switch as follows:
   1. Place the transmission shifter in the PARK position
   2. Place the ignition switch in the LOCK position. The switch is in the lock position when the column lock flag is parallel to the ignition switch terminals.
   3. Position the ignition switch park lock dowel pin so it will engage the steering column park lock slider linkage.
   4. Apply a light coating of grease to the column lock flag and the park lock dowel pin.
3. Place the ignition switch against the lock housing opening on the steering column. Ensure that the ignition switch park lock dowel pin enters the slot in the park lock slider linkage in the steering column.
4. Install the retaining bracket and ignition switch mounting screws, then tighten the screws to 22-30 inch lbs. (3-4 Nm).
5. If the vehicle is equipped with a tilt steering column, install the tilt lever.
6. With the key cylinder and the ignition switch in the LOCK position, insert the key cylinder into the ignition switch until it bottoms.
7. Insert the ignition key into the lock cylinder. While pushing the key cylinder in toward the ignition switch, rotate the ignition key until the end of travel.
8. Install the retaining screw into the bracket and lock cylinder. Tighten the screw to 22-30 inch lbs. (3-4 Nm).
9. Install the steering column covers, then the tilt lever, if equipped.
10. Connect the negative battery cable.
11. Check for proper operation.

Check at the link http://ramchargercentral.com/vehicle-help/removing-ignition-switch-160831

You'll still need to unlock the steering wheel and shift lever. This can only be done with the key or by breaking the collar for the keyswitch. Either it is very difficult, and best left to the hands of a proffesional.

This Outlines Removal Of Both LOCK CYLINDER<< Mechanical)) And The Ignition SWITCH ITSELF<< ELECTRICAL))

1. Remove steering wheel as outlined previously.
2. Remove turn signal switch as outlined in ``Turn Signal Switch, Replace'' procedure.
3. Place ignition switch in ``Run'' position, then remove lock cylinder retaining screw and lock cylinder.
4. To install, rotate lock cylinder to stop, while holding housing as shown, Fig. 6. Align cylinder key with keyway in housing, then push lock cylinder assembly into housing until fully seated.
5. Install lock cylinder retaining screw. Torque screw to 40 inch lbs. for standard columns, or 22 inch lbs. for adjustable columns.
6. Install buzzer switch, turn signal switch and steering wheel

CABALLERO, EL CAMINO, C, K, R, V & 1986---87 G MODELS
The ignition switch is mounted on top of the mast jacket inside the brake pedal support and is actuated by a rod and rack assembly.

1. Disconnect battery ground cable.
2. Disconnect and lower steering column. On some models, it may be necessary to remove the upper column mounting bracket if it hinders servicing of switch. Use extreme care when lowering steering column to prevent damage to column assembly. Only lower steering column a sufficient distance to perform ignition switch service.
3. On Caballero and El Camino, rotate ignition lock to ``Off'' unlocked position.
4. On C, K, R and V models, rotate ignition lock to ``Off'' locked position.
5. If lock cylinder has been removed, pull switch actuator rod up to stop, then pushrod down to second (Caballero or El Camino) or first (C, K, R and V models) detent as shown, Fig. 7.
6. Remove column mounted dimmer switch, if equipped, then remove switch retaining screws and switch.
7. Reverse procedure to install, noting the following:

1. Place gear shift lever in neutral.
2. Place lock cylinder and switch in positions noted in steps 3 and 4.
3. Fit actuator rod into hole in switch slider and secure switch with retaining screws, ensuring switch does not move out of detent.
4. Install and adjust dimmer switch, if equipped, as outlined in ``Column Mounted Dimmer Switch, Replace'' procedure.
5. Torque retaining screws to 35 inch lbs., then check switch operation.

Are you using the correct key? Is it your vehicle?

you may have to replace the steering column you can get one from a salvage yard and have the switch rekeyed for your key to fit it

Try moving steering wheel back & forth while turning the key & someone rocks vehicle forward.

either you have the wrong key,or try turning the steering wheel to the right all the way,then turn key,this usually happens when you park the vehicle and the wheels are turned,then the steering wheel locks hard

Remove the steering column covers and you'll find the electical switch to the ignition. You'll find a rod that activates the switch from the lock and tumbler. Check for anything broken between the two.