GM Service Manual Online
For 1990-2009 cars only
Makes
🢒
Chevrolet
🢒
2004
🢒
Optra
🢒
HVAC
🢒
HVAC Systems - Automatic
🢒 HVAC Schematics
Figure
1:
Blower Controls
Master Electrical Component List
I/P Fuse Block - HVAC and S/ROOF HTD/SEAT Fuses
I/P Fuse Block - HVAC and S/ROOF HTD/SEAT Fuses
Underhood Fuse Block - HVAC BLWR, ABS and HORN Fuses
G201
G203
Figure
2:
Compressor Controls - Sirius D4
Master Electrical Component List
Underhood Fuse Block - BATT PWR, IGN 1 and IGN 2 Fuses, Ignition Switch, I/P Fuse Block - RADIO, IMMOBILIZER, DLC, AUTO A/C, HAZARD LAMPS, RKE, TCM, and REAR FOG/CRUISE Fuses
I/P Fuse Block - HVAC and S/ROOF HTD/SEAT Fuses
Engine Data Sensors - Pressure and Temperature
Engine Data Sensors - Pressure and Temperature
Figure
3:
Compressor Controls - MR-140
Master Electrical Component List
Underhood Fuse Block - BATT PWR, IGN 1 and IGN 2 Fuses, Ignition Switch, I/P Fuse Block - RADIO, IMMOBILIZER, DLC, AUTO A/C, HAZARD LAMPS, RKE, TCM, and REAR FOG/CRUISE Fuses
I/P Fuse Block - HVAC and S/ROOF HTD/SEAT Fuses
Device Controls
Device Controls
Figure
4:
Compressor Controls - HV-240
Master Electrical Component List
I/P Fuse Block - HVAC and S/ROOF HTD/SEAT Fuses
Underhood Fuse Block - BATT PWR, IGN 1 and IGN 2 Fuses, Ignition Switch, I/P Fuse Block - RADIO, IMMOBILIZER, DLC, AUTO A/C, HAZARD LAMPS, RKE, TCM, and REAR FOG/CRUISE Fuses
Device Controls
Figure
5:
Air Delivery and Temperature Controls
Master Electrical Component List
HVAC Sensors
Underhood Fuse Block - BATT PWR, IGN 1 and IGN 2 Fuses, Ignition Switch, I/P Fuse Block - RADIO, IMMOBILIZER, DLC, AUTO A/C, HAZARD LAMPS, RKE, TCM, and REAR FOG/CRUISE Fuses
Underhood Fuse Block - BATT PWR, IGN 1 and IGN 2 Fuses, Ignition Switch, I/P Fuse Block - RADIO, IMMOBILIZER, DLC, AUTO A/C, HAZARD LAMPS, RKE, TCM, and REAR FOG/CRUISE Fuses
I/P Illumination (w/Dimming)
Stationary Windows (Notchback)
Vehicle Speed Sensor (VSS)
Vehicle Speed Sensor (VSS)
Vehicle Speed Signal
Vehicle Speed and Input Speed Sensors
Front Wipers (w/o Rain Sensor)
G203
Figure
6:
HVAC Sensors
Master Electrical Component List
Air Delivery and Temperature Controls