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Could it be coming from the dash??? That car might be old enough to have a speedo cable. Another thought, I know some Caddys that had an automatic park brake release. You had to put it in gear for the Park brake to release. Hope that helps.
What make vehicle ? Most all vehicles have a safety system .Don't try an force anything you'll break it ! Electronic Park Lock (EPL)/Ignition Lock Cylinder Control Actuator: If the vehicle is equipped with automatic transmission and a floor mounted console gear shift, it has an ignition lock cylinder control actuator system in the steering column. The ignition lock cylinder control actuator purpose is to prevent the ignition key from being turned to the OFF position when the transmission is in any position other than PARK and the vehicle may still be moving. The column ignition lock system consists of an ignition lock cylinder control actuator, and a park position switch that is located in the automatic transmission shift lock control switch. The ignition lock cylinder control actuator contains a pin that is spring loaded to mechanically prevent the ignition key cylinder from being turned to the lock position when the vehicle transmission is not in the PARK position. If vehicle power is lost, and/or the transmission is not in the PARK position the operator will not be able to turn the ignition key to the lock position and will not be able to remove the ignition key from the column. They also have this on column mounted shifters !
GM uses a Passkey system - your ignition system recognizes any key that is specially coded to your vehicle. If the key you are using is not the key for your vehicle, or your key is damaged, or the vehicle Passkey system is not working properly, the key will not turn. You should have at least three keys for this vehicle - two regular keys and a valet one. If all of them won't work, the problem is in the steering column. If you only have one key, take it and the vin number from your car to a GM dealer and get them to cut a new one and try that. If that doesn't work, you may have to get the car to a dealer for repair. You can also check for an ignition switch recall for your car, but that's a long shot.
The ignition key must be in the key cylinder for cylinder removal. The key cylinder must be removed first before removing ignition switch.REMOVAL 1. Disconnect negative battery cable at battery. 2. If equipped with an automatic transmission, place shifter in PARK position. 3. Rotate key to ON position.4. A release tang is located on bottom of key cylinder.5. Position a small screwdriver or pin punch into tang access hole on bottom of steering column lower cover.INSTALLATION 1. If equipped with an automatic transmission, place shifter in PARK position. 2. Position key cylinder into steering column as it would normally be in the ON position. 3. Press key cylinder into column until it snaps into position. 4. Check mechanical operation of switch. Automatic Transmission: Be sure transmission lever is locked in PARK position after key removal. If key is difficult to rotate or is difficult to remove, the shift lever-to-steering column cable may be out of adjustment or defective. If key can be removed, release lever mechanism may be defective. Release lever mechanism is not serviced separately. If repair is necessary, the steering column must be replaced. 5. Connect negative cable to battery. 6. Check electrical operation of switch.
One of the things is a lock-out switch on the brake pedal lever. Some are coordinated with the gearshift, the Keyswitch, and the starter Relay. Check to see if the brake lights work when you press on the brake pedal. If no signal is going to the brake lights, then there is a chance that the Park shift lever, the steering wheel and the Keyswitch are bound up.
Sometimes a steering wheel is at the extreme reach of the travel in the front suspension. This can sometimes happen in cold weather when the car is sitting on ice or snow. When the ice or snow melts, the front tires settle into a position that puts pressure on the steering wheel and loads Torque up the steering column. Another possibility is that the car was bumped in the Parking lot and jammed into a position creating Torque on the steering column.
Last, the tumbler inside the Keyswitch could have fallen apart and that is why the mechanism is not releasing the steering wheel.
There are adjustments in the Keyswitch to be at the correct position to work with the lockout at the bottom of the steering column.
some steering column shifters required the lever to be pulled back to the wheel before the shift could be made (a safety thing). Check for seized bushings or worn bushings that is preventing the movement
Its a simple fix - you just need to put your right hand underneath the dash, under the ignition switch with the stuck key, and feel around for the stiff transmission-shift-lock cable, and just giggle it about a bit. Try all directions, don't be aggressive with it; and eventually you will be able to turn the key to the LOCK position. Good luck
I took the cover off the steering column by removing 4 screws. (I had to remove the dash by removing 2 screws behind the Hood release and yanking the cover off. This is how you gain access to the two forward most bolts on the steering column cover.) From hear you should see the shift interlock on the top right of the sterring column. Pull the white lever to release the key lock. Turn the key to lock and remove your key. I would then purchase a new interlock and replace it.
The 2001 Dodge caravan has 2 heater cores - front (the main one), and the rear. Removal of the rear heater core is a whole different procedure than the front.
Front Heater Core - Removal and Installation
Before servicing the vehicle, refer to the Precautions Section.
Align the wheels in the straight-ahead position.
Disconnect the negative battery cable.
Before working around the steering wheel or the instrument panel all 2 minutes to pass to allow the air bag module to discharge.
Drain the cooling system into a clean container for reuse.
Remove the steering column, by removing or disconnect the following:
Lower left side steering column coverParking brake release cable from the parking brake lever10 steering column cover liner-to-instrument panel bolts and the cover liner
Rotate the key to the LOCK position; then, rotate the steering wheel to the LOCKED position.
Gear selector cable and its mounting bracket as an assembly from the upper steering column mounting bracket2 instrument cluster trim bezel-to-instrument panel screws, retaining clips and bezel2 steering column shroud-to-steering column screws and the shroudSteering column-to-intermediate steering shaft coupler
Loosen but do not remove the 2 lower steering column mounting bracket nuts/washers.
2 upper steering column mounting bracket nuts/washersSteering column assembly from the vehicle
Remove or disconnect the following:
Instrument panel-to-chassis harness interconnect and bracketLower silencer boot, at the base of the steering shaft
Working in the engine compartment, pinch off the heater hoses.
Heater core cover. Position some towels under the heater core hoses.Heater core plate and the hoses
Depress the heater core retaining clips.
Lift the accelerator pedal and slide the heater core past it.
Depress the brake pedal and remove the heater core from the heater/air conditioning housing assembly.
Fig. View of the steering column assembly
Fig. View of the interconnect and bracket
Fig. View of the front heater core assembly
Depress the brake pedal and install the heater core into the heater/air conditioning housing assembly.
Lift the accelerator pedal and slide the heater core past it.
Install or connect the following:
Heater hoses (using new O-rings) and the heater core plateHeater core coverHeater hoses clamps, working in the engine compartmentLower silencer boot at the base of the steering shaftInstrument panel-to-chassis harness interconnect and bracket
Install the steering column assembly by installing or connect the following:
Steering column assembly, carefully into the vehicle.2 upper and 2 lower steering column mounting bracket nuts/washers. Torque the nuts to 105 inch lbs. (12 Nm).Steering column-to-intermediate steering shaft coupler and tighten the pinch bolt to 21 ft. lbs. (28 Nm)2 steering column shroud and the shroud-to-steering column screwsBezel, the retaining clips and the 2 instrument cluster trim bezel-to-instrument panel screwsGear selector cable and its mounting bracket as an assembly to the upper steering column mounting bracket10 steering column cover liner and the cover liner-to-instrument panel boltsParking brake release cable to the parking brake leverLower left side steering column cover.Lower left side steering column cover
Refill the cooling system.
Connect the negative battery cable.
Run the engine to normal operating temperatures; then, check the climate control operation and check for leaks.