My name is Henry and I'm having an issue with my 98 chevy blazer no back up lights all fueses are good and bulbs are good what gives.

 

Some sort of switch connected to the transmission that sets when put into reverse could be bad??? If you can get yourself a wiring diagram, that would be the best place to start allowing you to work backwards along the wiring harness to where the problem is.

 

thanks i think it's the neutral safety switch on the transmission