most likely a heater core, unless it only happens when it rains, then maby windshield seal door seal?
clean the ac condenser line, i bet its plugged
In the trunk on the drivers side under the panel.
Up under the dash, drivers side, left side of the steering column.
Under the hood. Drivers' side attached to the brake booster on the firewall
Under the hood, drivers' side, black box.
Up under the dash, drivers side, left of the steering column
Behind the power steering canister, drivers side under the hood.
check your trunk on the drivers side there is a switch under the trunk carpeting on the trunk sidewall - that's how it is in my mark 8 1995
It's on the drivers side of the transmission.
Located on the drivers' side of the transmission.
Drivers side under the hood look to the right and down from the radiator and you will see a journal, where the hoses meet, in that journal is the thermostat
Either the key pad on the drivers' door, the remote, or use the key.
Under the rear of the car.