For 1990-2009 cars

Important: Always remove the thermostat prior to flushing the cooling system.

1. Various methods and equipment can be used for flushing. Follow the manufacturer's instructions if using special equipment such as a back flusher.

Important: Dispose of used coolant in a coolant holding tank which is picked up along with used oil. NEVER POUR USED COOLANT DOWN THE DRAIN. Ethylene glycol antifreeze is a very toxic chemical. Do not dispose of ethylene glycol antifreeze into the sewer system or ground water.

2. Open the drain plug (1) on the radiator. Drain the coolant into a container.
3. Close the drain plug (1).
4. Add water to fill the cooling system.
5. Repeat the drain and fill procedure until the drained water is clean.
6. Close the radiator drain plug (1).
7. Re-install the thermostat if removed.
8. Remove the hose (3) from the reservoir cap.
9. Slide the coolant reservoir (2) from the mounting bracket.
10. Clean the inside of the coolant reservoir with soap and water.
11. Rinse the coolant reservoir thoroughly.
12. Install the coolant reservoir to the vehicle.
13. Fill the radiator to the base of the radiator filler neck with a 50/50 mixture of ethylene glycol coolant GM P/N 1052753 (Canadian P/N 993089), or equivalent, and water.
14. Fill the coolant reservoir up to the FULL mark on the reservoir.
15. Install the reservoir cap on the reservoir and align the marks (1) on the cap and the reservoir.
16. Install the reservoir hose (3) to the reservoir cap.
17. Run the engine until the coolant is at running temperature - when both hoses feel warm and the coolant is moving in the radiator.
18. Add coolant as necessary to the radiator until the coolant reaches the radiator filler neck.
19. Install the radiator cap.
20. Check the following for any signs of leaks:

• | The radiator

• | The coolant reservoir

• | All of the coolant pipe and hose connections

21. Tighten any loose connections as necessary.