Here's a general procedure. Consult your owner's manual for the precise location of the drain valves and any specific instructions for your vehicle. The location of drain valves can vary slightly even within the same model year.
Tools You'll Need:
* A drain pan (large enough to hold several quarts of coolant)
* A wrench (probably a 10mm or 1/2 inch, check your radiator's drain valve)
* Gloves (coolant is corrosive)
* Safety glasses
Steps:
1. Locate the Radiator Drain Valve: This is usually located at the bottom of the radiator, near one of the lower radiator hoses. It's typically a small valve with a cap or plug.
2. Position the Drain Pan: Place the drain pan under the radiator drain valve to catch the coolant.
3. Open the Radiator Drain Valve: Carefully loosen and remove the drain valve using your wrench. The coolant will start flowing out immediately, so be prepared.
4. Let it Drain: Allow the radiator to drain completely. This may take some time.
5. Close the Drain Valve: Once the flow stops, carefully tighten the drain valve back in place.
6. (Optional) Drain the Engine Block: Many cooling systems also have a drain plug on the engine block. This is typically located lower down near the water pump, but its location varies greatly between engines. Check your owner's manual for the exact location and if you want to drain it as well. If you do drain the block, follow the same procedure as above.
7. Refill the Radiator: Once drained, carefully refill the radiator with the correct type and amount of coolant for your 1996 Chevrolet Cavalier. Refer to your owner's manual for specifications. Usually a 50/50 mix of coolant and distilled water is recommended.
8. Bleed the Air: After refilling, run the engine with the heater on high for several minutes to bleed any air pockets from the system. Check the coolant level frequently and add more if needed.
Important Considerations:
* Coolant is toxic: Handle coolant carefully and dispose of it properly according to local regulations. Many auto parts stores will recycle used coolant.
* Type of Coolant: Use the correct type of coolant for your vehicle. Check your owner's manual for the recommended type (usually Dex-Cool for GM vehicles of this era). Mixing different types of coolant can cause problems.
* If you're unsure about any step, consult a qualified mechanic.
This is a general guide. Always refer to your owner's manual for specific instructions and locations for your particular 1996 Chevrolet Cavalier. Improperly draining or refilling your cooling system can lead to overheating and engine damage.
