Here is a home made tester 12 volt. You can power the unit up, turn the flashers on, and turn on the back lights. It is for GM 2003 to 2006. But you can look up the wiring for your Tahoe to build your tester.
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.