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 MANUALSCHEVROLET2019EXPRESS 2500 BASE, VAN CARGO EXTENDED, 6.0L ENG VIN GREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 9 (HVAC SYSTEM - MANUAL)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Section 9 (HVAC System - Manual)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Section 9 (HVAC System - Manual)
WARNING: This page is about a different car, the 2018 GMC Savana 3500, 2018 GMC Savana 2500, 2018 Chevrolet Express 3500, and 2018 Chevrolet Express 2500. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic Wiring Diagrams
- HVAC Vacuum Schematics
- HVAC Wiring Schematics
- Front Air Delivery Controls and Front Blower Motor
- Compressor Controls (C60)
- Rear HVAC with Rear Air Conditioning (C69), with Rear HVAC Controls - Air Delivery Controls
- Rear HVAC with Rear Air Conditioning (C69), with Rear HVAC Controls - Rear Controls
- Rear HVAC with Rear Air Conditioning (C69), with Rear HVAC Controls - Front Controls
- Rear HVAC with Rear Air Conditioning (C69), without Rear HVAC Controls - Air Delivery Controls
- Rear HVAC with Rear Air Conditioning (C69), without Rear HVAC Controls - Front Controls
- Rear HVAC without Rear Air Conditioning (C36 without C69)
- Coolant Heater (K08)
- Diagnostic Information and Procedures
- DTC B0440, B0441, or B0442
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0445, B0446, or B0447
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0449, B0450, B0451, or B0452
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0455 or B0457
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0460 or B0462
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0465, B0467, or B0478
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC B0481, B0482, or B0483
- DTC B0484, B0485, B0486, B0488, or B048A
- DTC P0532 or P0533
- Diagnostic Instructions
- DTC Descriptors
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Diagnostic Aids
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Instructions
- DTC P0645, P0646, or P0647
- Diagnostic Instructions
- DTC Descriptor
- Diagnostic Fault Information
- Circuit/System Description
- Conditions for Running the DTC
- Conditions for Setting the DTC
- Action Taken When the DTC Sets
- Conditions for Clearing the DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Component Testing
- Repair Instructions
- Symptoms - HVAC Systems - Manual
- Air Conditioning Compressor Malfunction
- Blower Motor Malfunction
- Auxiliary Blower Motor Malfunction (RPO C36)
- Auxiliary Blower Motor Malfunction (RPO C69 w/o Rear Controls)
- Auxiliary Blower Motor Malfunction (RPO C69 with Rear Controls)
- Air Temperature Malfunction
- Auxiliary Air Temperature Malfunction
- Air Delivery Improper
- Air Delivery Improper - Auxiliary
- Vacuum Control System Diagnostic
- DTC B0440, B0441, or B0442
- Repair Instructions
- Wire to Wire Repair - HVAC
- Connector Reconnection - HVAC
- Heater and Air Conditioning Control Replacement
- Heater and Air Conditioning Control Temperature Knob Replacement (Front)
- Heater and Air Conditioning Control Temperature Knob Replacement (Auxiliary)
- Temperature Valve Link Replacement
- Temperature Valve Actuator Replacement
- Defroster Valve Actuator Replacement
- Mode Valve Actuator Replacement - Upper
- Mode Valve Actuator Replacement - Lower
- Air Inlet Valve Actuator Replacement
- Heater and Air Conditioning Control Vacuum Tank Replacement
- Heater and Air Conditioning Control Vacuum Source Hose Replacement (Check Valve to Vacuum Tank)
- Heater and Air Conditioning Control Vacuum Source Hose Replacement (Check Valve to Intake Manifold LV1)
- Heater and Air Conditioning Control Vacuum Source Hose Replacement (Check Valve to Vacuum Pump Pipe LWN)
- Air Valve Actuator Vacuum Harness Replacement (Under the Hood)
- Air Valve Actuator Vacuum Harness Replacement (Heater and Air Conditioning Control To Connector)
- Air Valve Actuator Vacuum Harness Replacement (Connector To Vacuum Actuators)
- Auxiliary Heater and Air Conditioning Control Replacement - Front (Passenger Van)
- Auxiliary Heater and Air Conditioning Control Replacement - Rear (Passenger Van)
- Auxiliary Heater and Air Conditioning Control Module Replacement
- Auxiliary Blower Switch Replacement
- Auxiliary Temperature Valve Actuator Replacement (Cargo)
- Auxiliary Temperature Valve Actuator Replacement (Passenger Van)
- Auxiliary Mode Valve Actuator Replacement (Cargo Van)
- Auxiliary Mode Valve Actuator Replacement (Passenger Van)
- Description and Operation
RENDER: 1.0x
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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.