cruise control on/off button will not stay in?

Hello,

It sounds like you have a faulty cruise control switch.
The cruise control switch is part of the multifunction switch.
In order to replace the switch you will have to remove the steering wheel along with the air bag.
Anytime you work around the airbag take extra precautions.
Before getting started make sure your steering wheel is straight and the ignition is in the lock position.
Be sure to disconnect the battery.
Always keep the airbag inflator away from you.

https://www.2carpros.com/articles/steering-wheel-removal

I have attached diagrams for your reference.

Please let me know of any questions.
Thank you.