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 G2500, VAN CARGO, 6.6 6REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 1852 (ENGINE COOLING SYSTEM)
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6
Section 1852 (Engine Cooling System)
2008 Chevrolet Chevy Express G2500, Van Cargo, 6.6 6SECTION Section 1852 (Engine Cooling System)
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 GMC Savana Special, 2009 GMC Savana Camper Special, 2009 GMC Savana, 2009 Chevrolet RV Cutaway, and 2009 Chevrolet Cutaway. 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
- Diagnostic Starting Point - Engine Cooling
- DTC P0480
- DTC P0483 or P0493
- 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 Procedures
- DTC P0495
- 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 Procedures
- DTC P0526
- 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 Procedures
- DTC P1258
- Symptoms - Engine Cooling
- Engine Overheating
- Loss of Coolant
- Thermostat Diagnosis
- Coolant Heater Inoperative (Gasoline)
- Coolant Heater Inoperative (Diesel)
- Engine Fails To Reach Normal Operating Temperature
- Pressure Cap Testing
- Coolant Leak Testing
- Fan Clutch Diagnosis
- Repair Instructions
- Cooling System Draining and Filling (Static Fill)
- Cooling System Draining and Filling (Vac N Fill)
- Flushing
- Radiator Cleaning
- Cooling Layer Removal
- Cooling Layer Installation
- Radiator Surge Tank Replacement
- Coolant Recovery Reservoir Replacement
- Radiator Surge Tank Inlet Hose/Pipe Replacement
- Radiator Inlet Hose Replacement (LU3, LR4, LM7, LQ4)
- Radiator Outlet Hose Replacement (LU3)
- Radiator Outlet Hose Replacement (LR4, LM7, LQ4)
- Radiator Hose Quick Connect Fitting
- Radiator Vent Inlet Hose Replacement
- Engine Oil Cooler Pipe/Hose Quick Connect Fitting Replacement
- Engine Oil Cooler Hose/Pipe Replacement (LR4, LM7, LQ4)
- Engine Oil Cooler Hose/Pipe Replacement (LU3)
- Fan Replacement
- Fan Clutch Replacement
- Turbocharger Coolant Bypass Valve Replacement
- Turbocharger Coolant Hoses/Pipes Replacement (Inlet)
- Turbocharger Coolant Hoses/Pipes Replacement (Outlet)
- Exhaust Gas Recirculation Coolant Hoses/Pipes Replacement (LLY/LBZ)
- Engine Coolant Thermostat Housing Replacement
- Engine Coolant Thermostat Replacement (6.6L (LLY/LBZ))
- Engine Coolant Thermostat Replacement (4.3L)
- Thermostat Housing Crossover Replacement (LLY/LBZ)
- Engine Coolant Air Bleed Pipe Replacement (With LH8)
- Thermostat Bypass Pipes Replacement
- Water Pump Replacement (LU3)
- Water Pump Replacement (LMF/LY2)
- Water Pump Replacement (LMM)
- Water Pump Replacement (LY6)
- Water Pump Outlet Pipe Replacement
- Engine Coolant Fan Upper Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L)
- Engine Coolant Fan Upper Shroud Replacement (6.6L)
- Engine Coolant Fan Lower Shroud Replacement (4.3L, 4.8L, 5.3L, 6.0L, 6.2L, 7.0L)
- Engine Coolant Fan Lower Shroud Replacement (6.6L)
- Radiator Replacement (Diesel)
- Radiator Replacement (Gas)
- Coolant Heater Replacement (4.3L)
- Coolant Heater Replacement (4.8L/5.3L (except RPO L33) 6.0L)
- Coolant Heater Replacement (4.8L/5.3L/6.0L)
- Coolant Heater Replacement (6.6L)
- Coolant Heater Cord Replacement (4.3 L Engine)
- Coolant Heater Cord Replacement (4.8L, 5.3L And 6.0L Engine)
- Coolant Heater Cord Replacement (6.6 L Engine)
- Description and Operation
- 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.