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 MANUALSCHEVROLET2001CHEVY EXPRESS G2500, VAN CARGO EXTENDED, 5.7 R, L31/KL8REPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 377 (ENGINE COOLING SYSTEM)
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Section 377 (Engine Cooling System)
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Section 377 (Engine Cooling System)
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
- Specifications
- Schematic and Routing Diagrams
- Component Locator
- Diagnostic Information and Procedures
- Diagnostic Starting Point - Engine Cooling
- Diagnostic System Check - Engine Cooling
- Scan Tool Output Controls
- Scan Tool Data List
- Scan Tool Data Definitions
- Diagnostic Trouble Code (DTC) List
- DTC P0480 (Lx5)
- DTC P0480 (L47)
- DTC P0481 (Lx5)
- DTC P0481 (L47)
- DTC P1258
- Symptoms - Engine Cooling
- Engine Coolant Temperature Indicator Always On
- Low Engine Coolant Indicator Always On
- Cooling Fan Always On
- Cooling Fan Inoperative
- Engine Overheating
- Loss of Coolant
- Thermostat Diagnosis
- Coolant Heater Inoperative
- Engine Fails To Reach Normal Operating Temperature
- Repair Instructions
- Draining and Filling Cooling System
- Flushing
- Radiator Cleaning
- Surge Tank Replacement
- Surge Tank Hose/Pipe Replacement - Inlet (LX5)
- Surge Tank Hose/Pipe Replacement - Inlet (L47)
- Surge Tank Hose/Pipe Replacement - Outlet (LX5)
- Surge Tank Hose/Pipe Replacement - Outlet (L47)
- Radiator Hose Replacement - Inlet (LX5)
- Radiator Hose Replacement - Inlet (L47)
- Radiator Hose Replacement - Outlet (L47)
- Radiator Hose Replacement - Outlet (LX5)
- Cooling Fan Replacement - Electric (LX5)
- Cooling Fan Replacement - Electric (L47)
- Thermostat Replacement (LX5)
- Thermostat Replacement (L47)
- Water Crossover Replacement (LX5)
- Water Crossover Replacement (L47)
- Water Pump Replacement (LX5)
- Water Pump Replacement (L47)
- Radiator Replacement (LX5)
- Radiator Replacement (L47)
- Coolant Heater Replacement - Left (LX5)
- Coolant Heater Replacement - Left (L47)
- Coolant Heater Replacement - Right (LX5)
- Coolant Heater Replacement - Right (L47)
- Coolant Heater Cord Replacement (LX5)
- Coolant Heater Cord Replacement (L47)
- Description and Operation
- Cooling System Description and Operation
- Cooling Fan Control
- Engine Coolant Indicators
- Engine Hot...A/C Off-9
- Hot...Idle Engine-32
- Hot...Reduce Engine Rpm-10
- Hot...Stop Engine-11
- Low Engine Coolant-15
- Coolant Level Control
- Coolant Heater (L47)
- Coolant Heater (LX5)
- Cooling System
- Cooling Cycle (LX5)
- Cooling Cycle (L47)
- Coolant
- Radiator
- Surge Tank
- Pressure Cap
- Air Baffles and Seals
- Water Pump (LX5)
- Water Pump (L47)
- Thermostat (LX5)
- Thermostat (L47)
- Transmission Oil Cooler
- Cooling System 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.