What is the best way to test this switch ? I just purchased this Blazer and the switch seems to have power to it, but nothing happens to either mirror when the buttons are pressed. Would both motors go at the same time ?
Thanks for any help

 

Not likely. Try checking the 3A mir/lks fuse in the underhood fuseblock first. If the rear hatch release doesn't work it's definitely the problem. (mine was blown when I bought my truck)

 

Thanks

 

I ckecked the fuse box all is well. Could the switch just be bad and not sending signal to mirror motors ? The switch has the lights working but thats it.