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 MANUALSCHEVROLET2006CHEVY EXPRESS G2500, VAN CARGO, 6.6 2REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 223 (HVAC SYSTEMS - MANUAL)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2
Section 223 (HVAC Systems - Manual)
2006 Chevrolet Chevy Express G2500, Van Cargo, 6.6 2SECTION Section 223 (HVAC Systems - Manual)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Savana Special, 2003 GMC Savana Camper Special, 2003 GMC Savana, 2003 Chevrolet RV Cutaway, and 2003 Chevrolet Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
- Intermittents
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Symptoms - HVAC Systems - Manual
- HVAC Compressor Clutch Does Not Engage
- HVAC Compressor Clutch Does Not Disengage
- Blower Motor Always On
- Blower Motor Inoperative
- Blower Motor Malfunction
- Blower Motor Always On - Auxiliary (Passenger Van w/Aux)
- Blower Motor Always On - Auxiliary (Aux Heat Only or Cargo Van w/Aux)
- Blower Motor Inoperative - Auxiliary
- Blower Motor Malfunction - Auxiliary
- Too Hot in Vehicle
- Too Cold in Vehicle
- Too Hot in Vehicle - Auxiliary (Passenger Van w/Aux)
- Too Hot in Vehicle - Auxiliary (Cargo Van w/Aux)
- Too Hot in Vehicle - Auxiliary (Cargo Van w/Aux Rear Heater)
- Too Cold in Vehicle - Auxiliary (Passenger Van w/Aux)
- Too Cold in Vehicle - Auxiliary (Cargo Van w/Aux)
- Too Cold in Vehicle - Auxiliary (Cargo Van w/Aux Rear Heater)
- Air Delivery Improper
- Air Delivery Improper - Auxiliary (Passenger Van w/Aux)
- Air Delivery Improper - Auxiliary (Cargo Van w/Aux)
- Vacuum Control System Diagnostic
- Repair Instructions
- HVAC Control Assembly Replacement
- Air Temperature Actuator Replacement
- Defroster Actuator Replacement
- Mode Actuator Replacement - Upper
- Mode Actuator Replacement - Lower
- Recirculation Actuator Replacement
- Vacuum Tank Replacement
- HVAC Control Assembly Replacement - Front Auxiliary
- HVAC Control Assembly Replacement - Rear Auxiliary
- HVAC Control Processor Replacement - Auxiliary
- Blower Motor Switch Replacement - Auxiliary
- Air Temperature Actuator Replacement - Auxiliary
- Mode Actuator Replacement - Auxiliary
- Description and Operation
- Air Delivery Description and Operation
- Air Distribution
- Auxiliary Air Distribution
- Recirculation Operation
- Air Temperature Description and Operation
- Notes
- HVAC Control Components
- HVAC Control Assembly
- Auxiliary HVAC Control Processor
- Air Temperature Actuator
- A/C Pressure Switches
- Bypass Valves
- Heating and A/C Operation
- Heater Mode - Auxiliary Heater without A/C
- Heater Mode - Front Auxiliary HVAC Control Assembly Only
- Heater Mode - Front Auxiliary HVAC Control Assembly with Rear Auxiliary HVAC Control Assembly
- Heater Mode - Rear Auxiliary HVAC Control Assembly
- A/C Mode - Front Auxiliary HVAC Control Assembly Only
- A/C Mode - Front Auxiliary HVAC Control Assembly with Rear Auxiliary HVAC Control Assembly
- A/C Mode - Read Auxiliary HVAC Control Assembly
- Engine Coolant
- A/C Cycle
- A/C Cycle with Auxiliary
- Special Tools and Equipment
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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.