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 326 (ENGINE COOLING SYSTEM)REMOVAL AND INSTALLATIONCOOLANT REPLACEMENT
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8
Coolant Replacement
2001 Chevrolet Chevy Express G2500, Van Cargo Extended, 5.7 R, L31/KL8SECTION Coolant Replacement
WARNING: This page is about a different car, the 2002 Saturn Vue. However, it is still accessible from the selected car via links, so may be relevant.
NOTE:
All entrapped air must be purged from the powertrain cooling system before final coolant level can be determined. Proper coolant level is critical to avoid engine damage.
IMPORTANT: Vehicle must be level when filling cooling system.
- Slowly add a mixture of 50/50 DEX-COOL antifreeze and clean water to coolant surge tank until the level reaches the top of the "Cold fill Range" (surge tank seam). Cooling system volumes, including heater core:
- 6-Cyl - 8.0L (8.45 qt.)
- 4-Cyl - 7.0L (7.4 qt.)
- Start engine and check for leaks.
- Run engine and cycle the vehicle from idle to 3000 rpms in 30 second intervals until the engine cooling fan comes on (engine cooling fan turns on at approximately 216°F [102°C]).
- Return the engine to idle, idle for 30 seconds then turn engine off.
- Add coolant to the surge tank until the level reaches surge tank vent port.
IMPORTANT: Level in the surge tank will return into the cold fill range once the vehicle cools.
- Install coolant surge tank cap.
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.