GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Chevrolet 🢒 2004 🢒 TrailBlazer - 2WD 🢒 HVAC 🢒 HVAC Systems - Automatic 🢒 HVAC Component Views
Figure 1:

Six Cylinder Engine, Left Side
Object Number: 747710 Size: MF
(1)A/C Compressor Clutch Connector
(2)A/C Compressor
Figure 2:

Body Front End
Object Number: 747711 Size: MF
(1)Ambient Air Temperature Sensor
Figure 3:

A/C Refrigerant Pressure Sensor, Six Cylinder Engine
Object Number: 797101 Size: MF
(1)Air Conditioning Refrigerant Pressure Sensor
(2)A/C Compressor
Figure 4:

Engine Compartment, Right Rear
Object Number: 747714 Size: MF
(1)A/C Low Pressure Switch
Figure 5:

Coolant Bypass Valve (Long Wheelbase Except XUV)
Object Number: 825659 Size: MF
(1)Accumulator
(2)Coolant Bypass Valve
Figure 6:

Instrument Panel Carrier
Object Number: 747715 Size: MF
(1)Blower
(2)I/P Center Support
(3)Blower Motor Control Processor
(4)Blower - Auxiliary (Short Wheelbase and XUV)
(5)Air Temperature Actuator - Left
Figure 7:

Instrument Panel Carrier-Right Side
Object Number: 747716 Size: MF
(1)Lower Air Temperature Sensor-Right
Figure 8:

Instrument Panel Carrier-Center Section
Object Number: 747731 Size: MF
(1)Lower Air Temperature Sensor-Left
Figure 9:

Instrument Panel Carrier, Left and Right
Object Number: 747718 Size: MF
(1)Air Temperature Actuator-Right
(2)Air Temperature Actuator-Left
(3)Defrost Actuator
(4)Mode Actuator
Figure 10:

Instrument Panel Carrier, Cowl Side
Object Number: 747719 Size: MF
(1)Recirculation Actuator
Figure 11:

Instrument Panel Carrier-Air Duct
Object Number: 747721 Size: MF
(1)Upper Air Temperature Sensors
Figure 12:

Instrument Panel
Object Number: 747798 Size: MF
(1)Ambient Light/Sunload Sensor
Figure 13:

Instrument Panel, Center
Object Number: 747722 Size: MF
(1)HVAC Control Module
Figure 14:

Lower I/P, Right Side
Object Number: 891676 Size: MF
(1)Blower Motor Control Processor
(2)Blower Motor
Figure 15:

Front Auxiliary Blower Motor Switch (Long Wheelbase Except XUV)
Object Number: 826160 Size: MF
(1)Lower Console
(2)Blower Motor Switch - Auxiliary
Figure 16:

B-Pillar, Left
Object Number: 747723 Size: MF
(1)Inside Air Temperature Sensor
Figure 17:

Lower Console
Object Number: 872448 Size: MF
(1)Lower Console
(2)HVAC Control Module-Auxiliary or RSA/HVAC Control Module-Auxiliary
(3)Console Mode Actuator
(4)C309
(5)C307
Figure 18:

HVAC Module - Auxiliary (Long Wheelbase Except XUV)
Object Number: 872310 Size: MF
(1)Mode Actuator - Auxiliary
(2)Blower - Auxiliary
(3)Air Temperature Actuator - Auxiliary
(4)C401
(5)In-Line 30A Fuse
Figure 19:

Blower Motor Control Processor - Auxiliary (Long Wheelbase Except XUV)
Object Number: 1208964 Size: MF
(1)Body Rear Opening
(2)Blower Motor Control Processor - Auxiliary
(3)Rear Evaporator and Heater Core