GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Pontiac 🢒 1998 🢒 Grand Prix 🢒 HVAC 🢒 HVAC Systems - Manual 🢒 HVAC Air Delivery/Temperature Control Schematics
Figure 1:

Cell 65: Heater A/C Control
Object Number: 513924 Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 65: Vacuum/Electric Solenoid
Cell 64
Cell 11: DIC/HVAC and HVAC CTRL Fuses
Handling ESD Sensitive Parts Notice
Cell 14: RH I/P Ground G200 (1 of 4)
Figure 2:

Cell 65: Vacuum/Electric Solenoid
Object Number: 513947 Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 65: Air Delivery System
Cell 65: Heater A/C Control
Handling Electrostatic Discharge Sensitive Parts Notice
Figure 3:

Cell 65: Air Delivery System
Object Number: 513930 Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 65: Vacuum/Electric Solenoid