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How do you change the coolant in a 2002 Buick?

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With any car you have to open the plug on the bottom inside of radiator using something to hold the fluid. Take off the radiator cap to release pressure. Once all has drained out, close plug tight with fingers. Refill 50/50 mix. Run car for 5 minutes with cap loosely on top. Add more coolant. You want to get the air pockets out for sure. Very important. You can also use a funnel if it fits right in radiator while running it to get air out but as it heats up the level will rise. Air pockets will overheat the car.

Posted on Sep 02, 2010

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I have a 2002 buick lesabre and the water pump was changes about a month ago. The car ran fine. The last week, the car is temp gauge is reading hot very fast. I dont smell any coolant and it doenst sm


some times when the water pump is changed you gotta fill up the radiator with coolant, run the engine until it gets hot, shut off the car and wait until the car cools down to put more coolant because some air may stay trapped inside and by following this steps you get rid of the air trapped inside.
try this:
1) when the car is cool take the cap of the radiator off and see if it's full. if it isn't, with the car still off, put some coolant until it gets full.

2) once the radiator is full, start your car and wait to see if the coolant goes down the radiator. if it does, keep putting coolant until it doesn't take any more.

Hope to be useful.

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