Disconnected wipers

Remove glove box, that should allow access to wiper parts, also it aids in removing heater box.

No air conditioning heater box is held in place by a ”J” rod that hooks over opening in cowl and drops straight down to back corner of box behind fresh air door. You will see a nut if looking near kick panel at underside of box below fresh air door.

After “J” rod, there two bolts or nuts securing heater core tubes, and four bolts at fan motor on engine side of fire wall that need to be undone. Disconnect control cables and motor electrical connections once glove box body is removed. Mark cables so they go back to correct flapper.

Consider getting a heater box rebuild kit from Detroit Muscle. Once cleaned out and rebuilt it will work like new.