This issue is commonly the shift interlock solenoid has failed. Basically this works by recognizing or being told by the transmission range sensor that the vehicle is in park and it is okay to remove the key. The fact that the solenoid is not allowing the key to release means that the switch that is not telling it to release. When you remove power from it by unhooking the battery then it de-energizes and releases the key.
It appears the unit needs to be replaced because I am not finding individual parts for this assembly. Take a look at the info attached and let me know if you need more info or questions. Thanks
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Sunday, May 3rd, 2020 AT 8:46 AM