Get some better quality blades.....I notice after 6 months in cold and hot weather they tend to break down..it gets 20 below in the winter followed by several 100+ days in the summer here..the rapid temp changes seem to screw up rubber.

I usually have to replace my blades every 6 months or so.

I have an issue that no wiper blades can reach on the far passenger side but I know other bonnevilles have this problem too.

I have found the tripledge blades to work wonders. I had them on my 95 Olds cutlass supreme for a long time and they wiped and last better then any others i have tried. I just replaced the original blades (ones with the fins on them) on my Bonneville with the tripledge.

Triple-edges have squeaked and farted on every car I've installed them on, including my Bonneville.