Radiator Drain Cock Replacement Radiator Drain Plug

NOTICE: When adding coolant, it is important that you use GM Goodwrench DEX-COOL® or HAVOLINE® DEX-COOL® coolant. If Coolant other than DEX-COOL® or HAVOLINE® DEX-COOL® is added to the system the engine coolant will require change sooner; at 50 000 km (30,000 mi) or 24 months.

1. Drain the coolant from the radiator. Refer to Cooling System Draining and Filling .



2. Remove the radiator drain plug and seal. The seal usually comes out attached to the plug.
3. Remove the body of the drain plug. Use your fingers or needlenose pliers to disengage the locking tangs from the side tank.
4. Clean the drain and the drain plug.

1. Install the seal on the drain plug stem.
2. Install the drain plug. Ensure that the body is fully seated in the side tank and that the locking tangs are engaged.
3. Refill the coolant to the proper level. Refer to Cooling System Draining and Filling .
4. Start the engine. After the engine reaches normal operating temperature, check for coolant leaks.