1989 Chevy Van coil leaking I think.

The windows fogged up, so I stopped and the coolent was dripping heavly on the ground passenger sideb so I checked inside and a very small amount was under the heater on the passengers side. I drove it home a few miles It did not over heat, I checked the coolent the next day it was very low filled it up started it an it was leaking out under heater. My reapir manual says you have to lower the steering colum to R&R the heater coil could you give me some direction. Should I remove the cover under the hood next to the blower motor to first make sure it is the coil and not a hose connection.