Draining Procedure

WARNING: This page is about a different car, the 2007 Pontiac G5 Pursuit, 2007 Pontiac G5, and 2007 Chevrolet Cobalt. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: To avoid being burned, do not remove the radiator cap or surge tank cap while the engine is hot. The cooling system will release scalding fluid and steam under pressure if radiator cap or surge tank cap is removed while the engine and radiator are still hot.

Remove the cap from the charge air cooler reservoir.
Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle .
Place a drain pan under the charge air cooler radiator.

Fig 1: View Of Inlet Hose & Auxiliary Water Pump

Courtesy of GENERAL MOTORS CORP.

Using GE-47622 , reposition the inlet hose clamp at the auxiliary water pump. See Special Tools .
Remove the inlet hose from the auxiliary water pump and allow the cooling system to drain.
Inspect the appearance of the engine coolant for discoloration:
- Discolored-Follow the flush procedure. Refer to Coolant System Flushing .
- Normal in appearance-Follow the filling procedure.