1999 Chevrolet Tahoe Brake light switch

It should just clip into place. Have you been able to remove the old one?

I finally got the retainer clip off and replaced the switch . But the problem now is that it still doesn't work any ideas?
Thank you Bob

Bob:

First, I just realized we have the same last name... Maybe we're related. lol

As far as the problem, have you checked all fuses? Are you getting power to the brake light switch? I assume lights are good.