1994 Chevy Astro Cruise Control

Good Morning,

Very often the cruise control disengages on it's own. Once this happens if you simply push "resume" on the controller it will not activate. If you tap the brake then hit "resume" it activates again properly till the next time it disengages on its own.

Anything I can check, possibly an air leak somewhere or would it be an electrical issue?

Thanks, Tommy