No. I don't know all my "notes" by ear, but I can read really well, (though my sight-reading abilities are WAAYY off right now)
I still ear train my intervals, but its slow-going. I learn how to sight sing, so I can loo,at a piece of music (without many crazy accidentals) and sing it somewhat okay.
When I was in school, they put alot of emphasis on sight-singing and it is a very important skill to have. I notice horn players tend to have this skill down cold.
The way I learned it was through "moveable do" solfege syllables. I learned to sing the chromatic scale and then apply it to the melody line of a tune. Not as good at it as I want/need to be, but I still practice it. This will make learning tunes in a combo setting really fast.