GM Service Manual Online
For 1990-2009 cars only
Figure 1:

HVAC Underhood Components


Object Number: 1480956  Size: LF
(1)A/C Compressor Clutch Coil
(2)A/C Refrigerant Pressure Sensor
(3)Ambient Air Temperature Sensor
Figure 2:

Automatic HVAC I/P Components


Object Number: 1480960  Size: LF
(1)HVAC Control Module - Auto
(2)Blower Motor Control Module
(3)Blower Motor
(4)Air Temperature Sensor - Inside
(5)Recirculation Actuator
Figure 3:

Automatic HVAC Module Components


Object Number: 1480962  Size: LF
(1)Mode Actuator
(2)Sun Load Sensor Assembly
(3)Coolant Temperature Sensor
(4)Temperature Actuator