GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Cadillac 🢒 2004 🢒 CTS 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 HVAC Component Views
Figure 1:

HVAC Module Components
Object Number: 1373985 Size: LF
(1)Evaporator Temperature Sensor Connector
(2)Evaporator Temperature Sensor
(3)Evaporator Core
(4)C321
(5)Recirculation Actuator
(6)C323
(7)Blower Motor
(8)Blower Motor Control Processor
(9)Air Temperature Actuator - Passenger
(10)Air Temperature Sensor - Inside
(11)Mode Actuator
(12)Air Temperature Actuator - Driver
Figure 2:

Ambient Air Temperature Sensor, Sunload Sensor and HVAC Control Module
Object Number: 1373986 Size: LF
(1)Ambient Air Temperature Sensor Connector
(2)Ambient Air Temperature Sensor
(3)Instrument Panel Cluster (IPC) (LHD shown, RHD similar)
(4)Radio
(5)HVAC Control Module
(6)Sunload Sensor Connector
(7)Speaker - Front Center (U57)
(8)Radio
(9)Sunload Sensor
(10)Trim Panel - I/P Center
Figure 3:

A/C Refrigerant Pressure Sensor (V8 Shown, V6 Similar)
Object Number: 1372936 Size: LF
(1)A/C Refrigerant Pressure Sensor (V8 Shown, V6 Similar)
(2)A/C Refrigerant Pressure Sensor Connector (V8 Shown, V6 Similar)
(3)C107 (LS6)
(4)C105 (LS6)
Figure 4:

LF of the Engine - 2.6L/3.2L (LY9/LA3)
Object Number: 1403010 Size: LF
(1)A/C Compressor Clutch Connector
(2)A/C Compressor
(3)A/C Compressor Clutch
Figure 5:

LF of the Engine - 3.6L (LY7)
Object Number: 1403021 Size: LF
(1)A/C Compressor Clutch Connector
(2)A/C Compressor
(3)A/C Compressor Clutch
Figure 6:

RF of the Engine - 5.7L (LS6)
Object Number: 1403027 Size: LF
(1)A/C Compressor Clutch
(2)A/C Compressor Clutch Connector
(3)A/C Compressor