Re: Water in Garage?
Park outside ...
The garage floor is probably sloped about like it should, from the back to front (towards driveway ). From the pictures I see that the house wall is next to the garage door. The way this SHOULD have been done is a curb would have been poured so that the house was either isolated OR 4" above the garage floor. Technically speaking, the house should be at least 4" above the garage floor so that gas fumes stay in the garage and don't seep into the house. But to talk about that now is like closing the barn door after the horse has run away.
I would strip the drywall off the garage side of the wall up high enough to at least remove the damage 6" may do it. Snap a chalk line or draw a line along the length of the wall and remove just that portion of drywall. Inspect the sill plate and framing to make sure no further damage is present. If there is damage, replace it with new materials, pressure treated for the sill, regular lumber for the studs. Scrub and wash the sill plate and concrete slab to remove any dirt and debris and allow to fully dry.* Apply a heavy bead of sealant along the floor/sill joint and lay off with your finger or other tool.**
* - You may need to wait until spring/summer when the weather is warm and dry and no further water/snow is being brought into the garage. It is important that the surfaces be clean and fully dry for the caulk to adhere and seal.
** - Read the label for clean up of the caulk. You will want to have latex gloves on OR use a disposable tool. Laying off the caulk does two things, it forces it into the joint and it finishes the surface to a nice appearance.
As for what type of caulk to use, it should be an elastomeric type, not silicone or latex. Read the labels, what you want is something designed for concrete that is pliable through the temperature range of the job. I don't have a recommendation because I don't use it very often and labels/brands change.
Replace the damaged drywall with the same thickness - should be 5/8" which is code. Paper or mesh tape is acceptable with at least one coat of drywall compound over the fasteners and joints.
I suffer from CDO ... Its like OCD, but in alphabetical order, LIKE IT SHOULD BE!!!