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

Cell 68: Heater A/C Control
Object Number: 299564 Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 68: Electric Actuators
Cell 67
OBD II Symbol Description Notice
Fuse Block Schematics
Handling ESD Sensitive Parts Notice
Ground Distribution Schematics
Cell 68: Electric Actuators
Figure 2:

Cell 68: Electric Actuators
Object Number: 299565 Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 68: Vacuum/Electric Solenoid
Cell 68: Heater A/C Control
Cell 68: Heater A/C Control
Fuse Block Schematics
Handling ESD Sensitive Parts Notice
Figure 3:

Cell 68: Vacuum/Electric Solenoid
Object Number: 299568 Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 68: Air Delivery System
Cell 68: Electric Actuators
Fuse Block Schematics
Handling ESD Sensitive Parts Notice
Figure 4:

Cell 68: Air Delivery System
Object Number: 332499 Size: FS
HVAC Components
HVAC Air Delivery/Temperature Control Circuit Description
Cell 68: Vacuum/Electric Solenoid