Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSCHEVROLET2008CHEVY EXPRESS G3500, VAN PASSENGER EXTENDEDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 54 (HVAC SYSTEM - AUTOMATIC)
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Section 54 (HVAC System - Automatic)
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Section 54 (HVAC System - Automatic)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2007 GMC Yukon XL, 2007 GMC Yukon, 2007 Chevrolet Tahoe, 2007 Chevrolet Suburban, and 2007 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- HVAC Component Views
- HVAC Connectors
- A/C Compressor Clutch
- A/C Low Pressure Switch
- A/C Refrigerant Pressure Sensor
- Air Temperature Actuator - Auxiliary
- Air Temperature Actuator - Left
- Air Temperature Actuator - Right
- Air Temperature Sensor - Lower Left
- Air Temperature Sensor - Lower Right
- Air Temperature Sensor - Upper Auxiliary
- Air Temperature Sensor - Upper Left
- Air Temperature Sensor - Upper Right
- Ambient Air Temperature Sensor - HVAC
- Ambient Light/Sunload Sensor Assembly (CJ2)
- Blower Motor
- Blower Motor - Auxiliary
- HVAC Control Module C1
- HVAC Control Module C2
- HVAC Control Module C3
- HVAC Control Module C4
- Inside Air Temperature Sensor - Front
- Inside Air Temperature Sensor - Rear
- Mode Actuator
- Mode Actuator - Auxiliary
- Recirculation Actuator
- Diagnostic Information and Procedures
- Diagnostic Code Index
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- DTC B0158, B0163, B0168, B0173, B0178, B0509, B0514, B3578 or B3583
- DTC B0183 or B0188
- DTC B0228, B0413, B0423, B0433, B3779 or B3782
- DTC P0532 or P0533
- DTC P0645
- Symptoms - HVAC Systems - Automatic
- HVAC Compressor Clutch Does Not Engage
- HVAC Compressor Clutch Does Not Disengage
- Blower Motor Always On
- Blower Motor Inoperative
- Blower Motor Malfunction
- Auxiliary Blower Motor Malfunction
- Too Hot in Vehicle
- Too Cold in Vehicle
- Air Delivery Improper
- Air Recirculation Malfunction
- Re-Calibrating Actuators
- Repair Instructions
- HVAC Control Module Replacement
- HVAC Control Module Replacement - Auxiliary
- Recirculation Actuator Replacement
- Mode Actuator Replacement
- Air Temperature Actuator Replacement - Left
- Air Temperature Actuator Replacement - Right
- Air Temperature Actuator Replacement - Auxiliary (Delphi)
- Mode Actuator Replacement - Auxiliary (Delphi)
- Air Temperature Sensor Replacement - Upper Auxiliary (Behr)
- Air Temperature Sensor Replacement - Lower Auxiliary (Delphi)
- Air Temperature Sensor Replacement - Lower Left Side
- Air Temperature Sensor Replacement - Lower Right Side
- Ambient Air Temperature Sensor Replacement
- Inside Air Temperature Sensor Assembly Replacement
- Inside Air Temperature Sensor Assembly Replacement - Auxiliary
- Sun Load Sensor Replacement
- Description and Operation
- Air Delivery Description and Operation
- Air Temperature Description and Operation
- Special Tools and Equipment
RENDER: 1.0x
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Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.