How do you add transmission fluid on a 1998 Honda Passport?

I owe a 98 Honda Passport and the Transmission Fluid had to be pumped directly in the transmission. I had to take mine to a shop.

Yes, the transmission on a 1998 Honda Passport is a sealed transmission, which means it has no dipstick and it only has one plug located underneathe the vehicle on the transmission itself. You have to drain and fill the transmission through the same hole. So you need to take it to a shop where they have a machine which will do this.