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 89 (HEATING SYSTEM, VENTILATION SYSTEM, AND AIR CONDITIONING SYSTEM)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN G
Section 89 (Heating System, Ventilation System, And Air Conditioning System)
2019 Chevrolet Express 2500 Base, Van Cargo Extended, 6.0L Eng VIN GSECTION Section 89 (Heating System, Ventilation System, And Air Conditioning System)
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
- Visual Identification
- Diagnostic Information and Procedures
- Symptoms - Heating, Ventilation, and Air Conditioning
- Leak Testing
- Air Conditioning (A/C) System Performance Test (L96, LC8)
- Air Conditioning (A/C) System Performance Test (LWN)
- Air Conditioning (A/C) System Performance Test (LV1)
- A/C Diagnostics Chart
- Heating Performance Diagnostic
- Defrosting Insufficient
- Noise Diagnosis - Auxiliary Blower Motor
- Noise Diagnosis - Blower Motor
- Air Conditioning Compressor Oil Diagnosis
- Noise Diagnosis - Air Conditioning (A/C) System (LWN)
- Noise Diagnosis - HVAC Module
- Odor Diagnosis
- Repair Instructions
- Odor Correction
- Refrigerant Recovery and Recharging
- Flushing
- Air Conditioning Compressor Oil Balancing
- Air Conditioning Compressor Replacement (LWN)
- Air Conditioning Compressor Replacement (LV1)
- Air Conditioning Compressor Replacement (L96, LC8)
- Air Conditioning Clutch Assembly Replacement (LV1)
- Air Conditioning Clutch Assembly Replacement (L96)
- Air Conditioning Clutch Assembly Replacement (LWN)
- Air Conditioning Clutch Drive Plate Adjustment
- Air Conditioning Compressor Bracket Replacement (LWN)
- Air Conditioning Compressor Bracket Replacement (L96, LC8)
- Air Conditioning Compressor Bracket Replacement (LV1)
- Air Conditioning System Seal Replacement
- Air Conditioning O-Ring Seal Replacement
- Air Conditioning Compressor Hose Replacement (LWN)
- Air Conditioning Compressor Hose Replacement (L96, LC8, LV1)
- Air Conditioning Condenser Hose Replacement (LV1)
- Air Conditioning Compressor and Condenser Hose Replacement (LWN)
- Air Conditioning Compressor and Condenser Hose Replacement (L96, LC8)
- Air Conditioning Evaporator Tube Replacement (C60)
- Air Conditioning Evaporator Tube Replacement (C69)
- Air Conditioning (AC) Refrigerant Filter Replacement
- Expansion (Orifice) Tube Replacement
- Air Conditioning Compressor Low Pressure Cut Off Switch Replacement
- Air Conditioning Compressor High Pressure Cut Off Switch Replacement
- Air Conditioning (A/C) Refrigerant Pressure Sensor Replacement
- Air Conditioning Accumulator Replacement
- Air Conditioning (A/C) Evaporator and Blower Module Assembly Replacement (C60)
- Air Conditioning (A/C) Evaporator and Blower Module Assembly Replacement (C42)
- Heater Assembly Replacement (C60)
- Heater Assembly Replacement (C42)
- Blower Case Replacement
- Auxiliary Heater Wiring Harness Replacement (Cargo Van C36)
- Auxiliary Heater Wiring Harness Replacement (Passenger Van C36)
- Air Conditioning Evaporator Core Replacement
- Heater Inlet Hose Replacement (LWN with C69)
- Heater Inlet Hose Replacement (LWN Auxiliary Heater Inlet Hose)
- Heater Inlet Hose Replacement (LWN Water Pump Inlet Pipe to Heater Inlet and Outlet Pipe)
- Heater Inlet Hose Replacement (LWN without K08 Engine Coolant Thermostat to Heater Inlet and Outlet Pipe)
- Heater Inlet Hose Replacement (LWN without C69)
- Heater Inlet Hose Replacement (LV1 without C69)
- Heater Inlet Hose Replacement (LV1 Auxiliary Air Conditioning Evaporator Front Tube to Heater Core Inlet Tube with C69)
- Heater Inlet Hose Replacement (L96, LC8 Heater Water Flow Control Valve to Heater Core Inlet Tube)
- Heater Inlet Hose Replacement (L96, LC8 Water Pump Housing to Heater Water Flow Control Valve)
- Heater Inlet Hose Replacement (L96 Heater Core Inlet Tube to Auxiliary Heater Inlet and Outlet Pipe)
- Auxiliary Heater Inlet Hose Replacement (L96, LV1 Auxiliary Air Conditioning Evaporator Front Tube to Water Pump with C69)
- Auxiliary Heater Outlet Hose Replacement (L96, LV1 Auxiliary Air Conditioning Evaporator Front Tube to Water Pump with C69)
- Heater Inlet And Outlet Pipe Replacement (LWN with K08)
- Heater Inlet And Outlet Pipe Replacement (LWN without K08)
- Heater Outlet Hose Replacement (LWN with C69)
- Heater Outlet Hose Replacement (LWN Auxiliary Heater Outlet Hose)
- Heater Outlet Hose Replacement (LWN Water Pump Inlet Pipe to Heater Inlet and Outlet Pipe)
- Heater Outlet Hose Replacement (LWN without C69)
- Heater Outlet Hose Replacement (LV1 Water Pump to Heater Core Outlet Tube without C69)
- Heater Outlet Hose Replacement (LV1 Auxiliary Air Conditioning Evaporator Front Tube to Heater Core Outlet Tube with C69)
- Heater Outlet Hose Replacement (L96, LC8 Heater Water Flow Control Valve to Heater Core Outlet Tube)
- Heater Outlet Hose Replacement (L96, LC8 Water Pump Housing to Heater Water Flow Control Valve)
- Heater Outlet Hose Replacement (L96 Auxiliary Heater Inlet and Outlet Pipe to Heater Core Outlet Tube)
- Heater Water Flow Control Valve Replacement (L96, LC8)
- Air Inlet Valve Replacement
- Blower Motor Control Module Replacement
- Blower Motor Replacement
- Air Distributor Duct Replacement
- Instrument Panel Outer Air Outlet Replacement
- Floor Air Outlet Replacement - Right Side (Outer)
- Floor Front Air Outlet Center Duct Replacement - Right Side
- Floor Front Air Outlet Center Duct Replacement - Left Side
- Floor Rear Air Outlet Duct Adapter Replacement
- Floor Air Outlet Duct Replacement - Left Side
- Instrument Panel Outer Air Outlet Duct Replacement - Left Side
- Windshield Defroster Duct Replacement
- Side Window Defogger Outlet Duct Replacement - Left Side
- Side Window Defogger Outlet Duct Replacement - Right Side
- Rear Floor Auxiliary Air Outlet Duct Replacement (Top Hat Cargo)
- Rear Floor Auxiliary Air Outlet Duct Replacement (Passenger Long Wheel Base Over the Axle)
- Rear Floor Auxiliary Air Outlet Duct Replacement (Front Long Wheel Base Passenger)
- Rear Floor Auxiliary Air Outlet Duct Replacement (Front Short Wheel Base Passenger)
- Mixer Valve Replacement
- Temperature Valve Replacement (Auxiliary C69)
- Temperature Valve Replacement (Auxiliary C36)
- Temperature Valve Replacement (C60)
- Temperature Valve Replacement (C42)
- Defroster Door Replacement
- Mode Valve Assembly Replacement (Auxiliary C69)
- Mode Valve Assembly Replacement (Auxiliary C36)
- Mode Valve Assembly Replacement (C60)
- Heater Core Cover Replacement
- Heater Core Replacement (C60)
- Heater Core Replacement (C42)
- Heater Coolant Heater Exhaust Muffler Replacement (LWN)
- Heater Coolant Heater Replacement (LWN)
- Heater Coolant Heater Bracket Replacement (LWN)
- Heater Coolant Heater Control Replacement
- Heater Coolant Heater Combustion Sensor Replacement
- Heater Coolant Heater Air Temperature Sensor Replacement
- Heater Coolant Heater Glow Plug Replacement
- Heater Coolant Heater Blower Replacement
- Fuel Heater Inlet Hose Replacement (LWN)
- Fuel Heater Outlet Hose Replacement (LWN)
- Auxiliary Air Conditioning (A/C) Evaporator and Blower Module Assembly Removal and Installation (C69 Passenger Van)
- Auxiliary Air Conditioning (A/C) Evaporator and Blower Module Assembly Removal and Installation (C69 Cargo Van)
- Auxiliary Air Conditioning Evaporator and Blower Module Cover Replacement (C36 Cargo Van)
- Auxiliary Air Conditioning Evaporator and Blower Module Cover Replacement (Passenger Van C69)
- Auxiliary Heater Case Replacement (Inboard C36)
- Auxiliary Heater Case Replacement (Outboard C36)
- Auxiliary Heater Replacement (Cargo Van C36)
- Auxiliary Heater Replacement (Passenger Van C36)
- Auxiliary Heater Blower Screen Replacement (Cargo Van)
- Auxiliary Heater Blower Screen Replacement (Passenger Van)
- Auxiliary Heater Inlet and Outlet Hose Replacement (Intermediate &C36)
- Auxiliary Heater Inlet and Outlet Hose Replacement (Rear &C36)
- Auxiliary Heater Inlet and Outlet Pipe Replacement (LWN)
- Auxiliary Heater Inlet and Outlet Pipe Replacement (L96, LV1 with C36)
- Auxiliary Blower Motor Resistor Assembly Replacement (Cargo Van)
- Auxiliary Blower Motor Resistor Assembly Replacement (Passenger Van)
- Auxiliary Blower Motor Replacement (C36 Cargo Van)
- Auxiliary Blower Motor Replacement (Passenger Van C36)
- Auxiliary Blower Motor Replacement (Passenger Van C69)
- Auxiliary Heater Air Outlet Duct Replacement
- Auxiliary Air Conditioning Air Outlet Replacement (Passenger Van)
- Auxiliary Air Conditioning Air Outlet Duct Replacement (Top Hat Cargo Van C69)
- Auxiliary Air Conditioning Air Outlet Duct Replacement (Rear Pillar Passenger Van)
- Auxiliary Heater Core Replacement (C36 Cargo Van)
- Auxiliary Heater Core Replacement (Passenger Van C69)
- Auxiliary Air Conditioning Evaporator Thermal Expansion Valve Replacement
- Auxiliary Air Conditioning Evaporator Replacement
- Auxiliary Air Conditioning Evaporator and Blower Case Replacement - Inboard
- Auxiliary Air Conditioning Evaporator and Blower Case Replacement - Outboard (C69)
- Auxiliary Air Conditioning Evaporator Outlet Front Hose Replacement (Intermediate)
- Auxiliary Air Conditioning Evaporator Front Tube Replacement (Front)
- Auxiliary Air Conditioning Evaporator Hose Replacement (Rear)
- Auxiliary Blower Motor Relay Replacement (Cargo Van)
- Auxiliary Blower Motor Relay Replacement (Passenger Van)
- Auxiliary Air Conditioning Evaporator and Blower Module Drain Valve Replacement
- Auxiliary Air Conditioning Wiring Harness Replacement (Passenger Van C69)
- Auxiliary Air Conditioning Wiring Harness Replacement (Cargo C69)
- Auxiliary Heater and Air Conditioning Pipe Repair
- Heater Water Auxiliary Pump Inlet Hose Replacement (LWN without K08 Heater Inlet and Outlet Pipe to Lower Water Pump Inlet Pipe)
- Heater Water Auxiliary Pump Inlet Hose Replacement (LWN without K08 Heater Inlet and Outlet Pipe to Upper Water Pump Inlet Pipe)
- 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.