Draining Procedure
WARNING: This page is about a different car, the 2017 GMC Acadia. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
With a pressurized cooling system, the coolant temperature in the radiator can be considerably higher than the boiling point of the solution at atmospheric pressure. Removal of the surge tank cap, while the cooling system is hot and under high pressure, causes the solution to boil instantaneously with explosive force. This will cause the solution to spew out over the engine, the fenders, and the person removing the cap. Serious bodily injury may result.
- Remove the coolant pressure cap.
- Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
- Place a drain pan under the drain cock.
- Loosen the radiator drain cock (1). Refer to Radiator Drain Cock Replacement
- Drain the cooling system.
- Tighten the radiator drain cock (1). Refer to Radiator Drain Cock Replacement
- Lower the vehicle.
- Inspect the coolant.
- Follow the appropriate procedure based on the condition of the coolant.
- Normal in appearance - Follow the filling procedure.
- Discolored - Follow the flush procedure. Refer to Flushing .