Possible electrical issue

[Livebai8]

Good morning people, I have an '02 LS 4x4 Tahoe, and I am experiencing an issue with my passenger lock, and my rear gate lock. Both work intermittenly, but then they don't and I have to go "old school" to unlock/lock. Has anyone else had this issue, and what did you do to fix it? I'm guessing I may need new lock relays or switches or something, but it's only these two! All else is working fine.

Thanks for helping!