What coolant does a 2000 Chevy Silverado take?
The 2000 Chevrolet Silverado uses Dex-Cool Extended Life coolant (GM Dex-Cool), which is typically orange in color and should be mixed 50/50 with distilled water unless your manual specifies otherwise.
For this generation, the Silverado’s common engine options—including the 4.3L V6, 5.0L, and 5.7L Vortec—are designed to use Dex-Cool. Dex-Cool is an organic acid technology (OAT) coolant that is silicate-free and formulated for longer service life. It is not compatible with conventional green (inorganic) coolant; if the system currently contains a different type, a full flush is recommended before refilling with Dex-Cool. You can buy Dex-Cool as a premixed 50/50 solution or as concentrate to mix with distilled water. A typical replacement interval is roughly every 5 years or 150,000 miles, though you should verify with your owner’s manual or a GM service advisor.
Identifying the correct coolant for your Silverado
Before selecting or purchasing coolant, consider these key facts to ensure compatibility and proper performance.
- Type: Dex-Cool Extended Life coolant (GM Dex-Cool).
- Technology: Organic acid technology (OAT); silicate-free formulation.
- Color: Usually orange.
- Mix: 50/50 coolant-to-distilled water unless the manual specifies a different ratio.
- Compatibility: Do not mix Dex-Cool with conventional green coolant; if you’re switching from another type, perform a full system flush first.
- Replacement interval: Approximately every 5 years or 150,000 miles, per GM guidance and the owner’s manual.
- Availability: Widely available at auto parts stores and GM dealers.
Adhering to these guidelines helps protect the cooling system from corrosion and heat-related damage, supporting reliable engine performance in a range of climates.
Practical steps for servicing the cooling system
If you’re planning to drain or replace the coolant, these general steps help ensure a safe and effective refill.
- Ensure the engine is completely cool, then place a drain pan under the radiator drain valve.
- Open the drain valve and allow the old coolant to drain out completely. Collect it for proper disposal.
- If converting from a different coolant type, flush the system with distilled water until the runoff is clear, then close the drain plug.
- Fill with Dex-Cool 50/50 premix or with Dex-Cool concentrate mixed with distilled water to the proper level on the reservoir.
- Start the engine with the radiator cap off and the heater set to hot to help bleed air from the system; run until the thermostat opens and the upper radiator hose is hot.
- Top off the coolant to the correct level, replace the cap, and check for leaks once the system cools. Recheck the level after a day of normal driving.
- Dispose of used coolant and any cleaning materials at an approved facility and keep the work area clean.
If you’re unsure about any step or facing persistent temperature issues, consult a professional mechanic or Chevrolet dealership service department.
Summary
The 2000 Silverado is designed to use Dex-Cool Extended Life coolant (orange, GM Dex-Cool), typically mixed 50/50 with distilled water. Do not mix with conventional green coolant; if the system contains a different type, perform a full flush before refilling. Replacement intervals are generally around 5 years or 150,000 miles, but always confirm with the owner’s manual or a GM service advisor. Proper disposal of used coolant is essential, and professional service is recommended if you’re unsure about any step.
