W150 1/2 Ton Pickup 4WD V8-318 5.2L VIN T 2-BBL (1983)
12. Remove steering column studs and radio.
13. Remove scoop connecting heater to center distribution duct (2 screws).
14. Remove center distribution duct by pulling bottom of dash out to gain clearance.
15. Remove floor air distribution duct.
16. Disconnect temperature control cable through glove box.
17. Remove 7 retaining nuts from firewall and screw that retains assembly to cowl side sheet metal.
18. Flex dash out and remove heater assembly.
19. Remove nuts from door arms and remove door arms.
20. Remove 7 screws to remove cover from housing.
21. Remove evaporator core.
22. Reverse procedure to install.
