It's not a single, easily visible hose like you might find in a home AC unit. The condensate drains through a small, often hidden, tube or channel. You'll likely have to do some searching, possibly involving removing some interior panels under the dashboard, to find it.
To locate it, you might need to:
* Consult a repair manual: A factory service manual specific to your 1996 GMC Jimmy will give the most accurate location.
* Search online forums: Search forums dedicated to GMC Jimmy owners or general automotive repair. Someone may have described the location or even posted pictures.
* Check under the passenger-side carpet: If the drain is clogged, water might accumulate here, giving you a clue to its general location.
Remember to be careful when working under the dashboard to avoid damaging wires and other components. If you're not comfortable working on your vehicle, it's best to take it to a qualified mechanic.