Heater Core And Case Assembly; Air Inlet And Plenum Air Valve - Pontiac Grand Prix Service Manual

CUSTOM AIR CONDITIONING 1A-33
VACUUM FROM
CONTROL PANEL
Fig. 1A-50 Firebird
-
Air Inlet and Plenum Air Valve
HEATER CORE AND CASE ASSEMBLY
7. Remove screws retaining case to dash.
8. Move core and case assembly rearward to free
ALL REMOVE AND REPLACE
attaching studs from cowl and remove core and case
assembly.
1. Drain coolant.
9. Disconnect cables and wire connectors.
2. Remove heater case to cowl attaching nuts (Fig. 1A
51). One some models it may be necessary to drill a
10. Adequately mark heater cam and bracket assembly
On inch hole in fender skirt to gain access to lower nut.
'in three places to insure proper reinstallation.
3. Remove two water hoses attached to heater core.
11. Remove heater cam and bracket assembly.
4. Remove lower duct and outlet assembly.
5. Remove glove box.
6. Remove defroster duct attaching screw.
12. Remove front case to rear case attaching screws.
421 13. Separate front and rear case:
14. Remove screws retaining core attaching bands and
remove core.