when you pull yours, you can check for little burn marks and things like that. double check that the connection is still nice and tight. if you're lowered or even a loud ass exhaust that vibrates the car, it can make that connection loose and that can cause the problem.

you can technically just swap out the gauge that is bad, but at that point, you might as well just swap the whole cluster. once they start to go, it doesn't take long for the whole thing to tap out.