Will removing glass sliding door and replacing with solid wall help reduce outside noise.
Yes indeed
I take it you are near a busy roadway or a railroad track!
Yes it will help. But you will loose natural light and ventilation in the nice weather and a means of egress in case of fire.
Yes it will help but it's like a Band-Aid if you have a lot of noise because you're by a road then I would suggest insulating the house and use in triple pane sliding doors
Search the TrustedPros directory and discover the best contractors in your area.
Find your home service pro