Cooling System Leak Testing L81

Important: The vehicle must be level when filling the cooling system.

1. Slowly add a mixture of 50/50 DEX-COOL® antifreeze and clean water to the coolant surge tank until the level reaches the Cold line (surge tank seam).

Specification
The cooling system volume, including the heater core, is 7.4 L (7.8 qt).

2. Start the engine and check for leaks.
3. Run the engine until the thermostat has opened.

3.1.	Use a scan tool to verify the ECT is between 87-90°C (188-196°F).

3.2.	Cycle the RPM from idle to 3000 in 30 seconds intervals to aid in bleeding off the cooling system.

3.3.	Add coolant as necessary to bring the level up to the coolant surge tank Cold line (surge tank seam).

4. Install the coolant surge tank coolant cap.

Cooling System Leak Testing L61

Important: The vehicle must be level when filling the cooling system.

1. Slowly add a mixture of 50/50 DEX-COOL® antifreeze and clean water to the coolant surge tank until the level reaches the Cold line (surge tank seam).

Specifications

•	The cooling system volume, including the heater core, on an L61 with an automatic transaxle, is 6.9 L (7.3 qt).

•	The cooling system volume, including the heater core, on an L61 with a manual transaxle, is 7 L (7.4 qt).

2. Start the engine and check for leaks.
3. Run the engine until the thermostat has opened. Use the scan tool to verify the engine coolant temperature (ECT) is 90°C (194°F).
4. Add coolant as necessary to bring the level up to the coolant surge tank Cold line (surge tank seam).



5. Install the coolant surge tank coolant cap.