01 Blazer little problem

I have a 2001 Chevy Blazer and my windshield wipers don't wipe a big section right in front of my drivers seat.

Now i already replaced the wiper blades and swithced the arms from the passenger side to the drivers side and the problem is still there.

What could be wrong?

If the same section of glass is unaffected by changing the arms and blades, try cleaning the glass with rubbing alcohol, vinegar and newspaper, or 409, then wash with clear water and a towel.

The 95-later blazer has a distinct curved windshield. The standard replacement blades to not fit well and so you don't get full coverage. Buy the curved blades at the dealer or parts stores.