My windshield washer tank on my 99 Blazer we fill it and overnight it leaks to @ 2 inches from the bottom of the tank. Can't find the info any place. Thanks

Have you removed it to look for cracks?

If the plastic tank is cracked, you can probably seal it with RTV.

I guess that's my question, does anyone know how to remove the tank? Thanks

You have to remove the air filter box , one 10 mm nut and loosen clamp to flex hose going to maf. I believe its one 10 mm screw near top of tank that holds it to wheel wheel and then kind of pulls out. There are 2 pumps in the tank that push in a rubber groumet and then snap into the tank near the top of pump which presses in down and holds it in place. I better your lower pump is leaking by the groumet or a hose came loose you will be able to see better with the air filter box out.