Q: service 4wd light comes on intermidently on 2000 Chevrolet Silverado 1500

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
was diagnosed and told the 4wd mode switch was faulty. It does shift to 4wd and works properly what i need to know is that the switch in the dash that changes the modes itself
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