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 365 (HYBRID ENGINE COOLING SYSTEM)
2008 Chevrolet Chevy Express G3500, Van Passenger Extended
Section 365 (Hybrid Engine Cooling System)
2008 Chevrolet Chevy Express G3500, Van Passenger ExtendedSECTION Section 365 (Hybrid Engine Cooling System)
WARNING: This page is about a different car, the 2008 GMC Yukon and 2008 Chevrolet Tahoe. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Diagnostic Information and Procedures
- Diagnostic Code Index
- DTC P0A01-P0A03
- 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 MIL/DTC
- Reference Information
- Circuit/System Verification
- Circuit/System Testing
- Repair Procedures
- Hybrid Cooling System Overheating (Mechanical)
- Hybrid Cooling System Overheating (Electrical)
- Hybrid Cooling System Loss of Coolant
- Hybrid Cooling System Pressure Cap Testing
- Hybrid Coolant Leak Test
- Repair Instructions
- Coolant Temperature Sensor Replacement (Generator Control Module)
- Generator Control Module Cooling System Draining and Filling
- Filling Procedure
- Generator Control Module Coolant Pump Hose Replacement (Pump to Pump)
- Generator Control Module Coolant Pump Hose Replacement (Pump to Radiator)
- Generator Control Module Coolant Inlet Hose Replacement
- Generator Control Module Coolant Outlet Hose Replacement
- Generator Control Module Coolant Pump Replacement (Left)
- Generator Control Module Coolant Pump Replacement (Right)
- Generator Control Module Coolant Radiator Replacement
- Generator Battery Vent Fan Relay Replacement
- Generator Battery Vent Fan Replacement
- Battery Cooling Air Outlet Duct Replacement
- Description and Operation
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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.