OBS Power Locks - intermitant failure

[92bluesilverado]

My 92 has picked up a funny habit of the power door locks wont work when hitting the lock/unlock button. it happens randomly - door open & closed. When it does happen both door lock switches wont work. Took apart the doors and the wires are all in great condition even running through the door.

Anything I am missing? is the switch going bad or is the solenoid starting to go?

Not great at electrical so any point in the right direction is appreciated.