Exploded parts diagram of 1989-91 inside A/C box assembly

Late '88-91 Inside HVAC Box

13466 - Backlight bulb
18473 - Upper housing
18476 - Heater core
18478 - Defrost door
18518 - Operating cable (single push-pull)
18519 - Knob
18529 - Cable guide
18541 - Backlight bulb socket assembly
18549 - Control panel (heat only)
18570 - Foam seal
18658 - Heater core seal
18854 - Control panel (heat only)
18A318 - Vacuum motor
18B299 - Heater core cover
18A484 - Housing assembly with doors
18B535 - Mode door lever
18B621 - Lower housing
18B684 - Idler lever
18C433 - Floor register
18C686 - Defrost door lever
18D416 - Temperature blend baffle
18N287 - Temperature cable clip
19788 - Temperature blend lever
19980 - Control panel (with A/C)
19986 - Blower speed switch
19A697 - Foam anti-rattle strip
19B888 - Vacuum switch assembly
19C770 - Locking clip
19C827 - Vacuum harness
19D887 - Wiring harness section
387711-S - Nut
390278-S - Screw
390865-S - Screw
42366-S - Screw
45261-S - U-nut
56950-S - Bolt
N623342-S - U-nut
N800906-S - Bolt
N801696-S - Locking clip
N805304-S - Stud-head bolt

Heater Hose Routing:
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Owner caption November 2011 · Photo 3977 of 5000