my drivers side window i noticed has some slight scratchs on my tint it but i think that they are getting worst. How can i stop it before my tint is messed up?

 

Where are the scratches? There are two adjustable felt stops behind your interior door panel. They ride against the glass. If they get dirt in them, or begin to wear thin they will scratch your tint.

The solution is replacing them.

 

how hard are they to replace and were can i get the felt things?

 

They are right on top, and simple to replace. I'd get new ones from GMPARTSDIRECT.