1996 Blazer speakers

Hi.. My 1996 blazer lost its rear speakers a number of years ago.. no big deal... but now, the passenger front speaker is not playing as well.. sometimes, it does click on, so I would think the speakers are fine..

Sounds like wiring somewhere (Actully the power access to my drivers seat does not work as well)

anyone else experience the same and have a solution..thank you

bobmga62