Pontiac Aztek 2003 Owner's Manual page 311

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3. After the engine cools, open the coolant air bleed

There are two bleed valves. One is located on the

thermostat housing. The other is located on the

thermostat bypass tube.

4. Fill the radiator with the proper DEX-COOL

5. Rinse or wipe any spilled coolant from the engine

coolant mixture, up to the base of the ﬁller

neck. See Engine Coolant on page 5-20 for more

information about the proper coolant mixture.

If you see a stream of coolant coming from an air

bleed valve, close the valve. Otherwise, close

the valves after the radiator is ﬁlled.

and the compartment.

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