Question about 2002 Buick Century

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2002 Buick Century - low coolant indicator lit up twice in an hour and hasn't done it again. The dealership suggested a complete coolant flush and radiator flush. They said lower intake gasket is leaking into the coolant system. Does this sound plausable? How long with the system flush correct the problem? Also, how much should one expect to pay for this service? I'm asking on behalf of my mom who is in TN. The vehicle has less than 50K miles.

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The intakes on the 3.1 engines are bad to leak,most likely is the problem,cost could be up to 360.00 depending on all the do,changing and flushing cooling system,and adding expesive antifreeze.I hope this was somewhat helpfull,maybe not good news,but the truth.let us know if this was helpful,if not let us know this also.thanks,If we can help further,let us know.

Posted on Oct 06, 2009

Testimonial: "Thanks for the info. My parents are traveling and concerned b/c this problem just arose. I appreciate the advice."


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I had my transmission flushed at 61k.mi. I now have 77 k.mi. & my shop, a dealer, says I need it done again Does this sound right? It's a 2002 Buick Century.'Thanks.

This doesn't sound right at all. You should have it done every 30k miles but 16 is a little overboard really. Even then it depends on your driving habits and the environment you live in but 30k is on the safe side of that. Now if they just flushed it out then i would suggest maybe replacing the filter (hopefully they did that with the flush!). If there are any problems with the transmission i can almost stake that it doesn't have to do with the fluid but something else. There is always a chance that the shop that did it didn't do it right so i can't say exactly if it would really NEED it or not. You can check the fluids and make sure that it still looks good. If it doesn't then there is something else wrong causing this (maybe a seal) or the shop didn't properly flush it.

Have a good one!

Feb 23, 2011 | 2002 Buick Century

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1998 buick century low coolant light keeps flashing after I filled overflow container-radiator is full

Change the low coolant sensor. It is located on the radiator. It might be a good idea to get the radiator flushed too.

Feb 16, 2011 | Buick Century Cars & Trucks

1 Answer

The low coolant light is always on in my 2002 Buick Century. The rad was flushed as well as the overflow container and the coolant level never drops. The needle of temperature gage is always at the mid...

if the sensor was changed, the wiring to the sensor has to have a break in it somewhere. check for power and ground at your connector, and start tracing back to find the break. good luck!

Oct 25, 2010 | 2002 Buick Century

1 Answer

How to reset low coolant sensor on 1999 buick century

Your cooling sensor is in the white plastic coolant tank that is on your firwall under the hood. If you fill it with coolant and the light continues to stay on. try and slap it a few times and see if that resets it. it could be gunked up. if that doesnt work fill the tank with radiator flush and let it sit for a little while and then flush the tank and refill with coolant.

Oct 11, 2010 | 1999 Buick Century

1 Answer

On a 2002 Buick Century with 3.1 liter motor. "service engine soon" light remains lit. Last week it was the "low coolant" Light that stayed lit. Had a new coolant sensor installed and problem still...

No you need to have the vehicle scanned for the check engine light to see what the code is that has it on. Autozone will do this for free.

May 17, 2010 | 2002 Buick Century

1 Answer

Had a question on my low coolant light,suggested remedy was to reset the computer,so how is that done?

One way is to remove the negative terminal from the battery and leave it off for a couple of minutes before re-connecting it. The ECU will reset and as long as there are no issues, all warning lights will now be off.

Mar 19, 2010 | 2002 Buick Century

1 Answer

I have a 2001 Buick Century. I just had my

One good way to find where a coolant leek is coming from - is - when you get home and the car is good and warmed up - "hot".. Park it up on ramps if you have them.. Right after you shut it off - it will build even more pressure in the cooling system.. At this time car is off - open the hood and look (from under the hood and from under the car if you have ramps) for leeks,, listen for the "hissssss".. If the leek is just to small and/or to difficult to find - take it to a shop or oil change place for a compression test of the cooling system to locate the leek..

Hopefully its just a hose leek..

Good luck..

Sep 23, 2009 | 2001 Buick Century

1 Answer

2002 buick century low coolant lite on

make sure youre using dex cool

Nov 05, 2008 | 2002 Buick Century

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