Question about 2000 Buick Century

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Replace heater core in a 2000 buick century

When replacing the heater core in my 2000 buick century, does the AC have to be messed with?

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  • yadayada
    yadayada May 28, 2012

    Yes it (the AC) must be drained or evacuated as we call it.

  • dannie_ve974 Jun 09, 2013

    The ac is drained. It all leaked out.

  • dannie_ve974 Jun 09, 2013

    What does the heater core for a 2000 century have to do with my ac leaking at the place where I recharge the ac..

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Please do not tamper wid the aircon as the system is pressure filled with co"2 liquid gas.

Posted on Jan 29, 2009

  • yadayada
    yadayada May 28, 2012

    The system is not filled with CO2 (Carbon Dioxide) it is filled with a compressed gas in liquid form called "R134" . R134 is a chemical called Tetrafluoroethane a type of AC system refrigerant used in cars and trucks.

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Of course it does, components of the system must be disconnected.

Posted on Jan 29, 2009

  • frontendman May 28, 2012

    No it doesnt unless you remove the entire case which would mean removing the dash which is not necessary for heater core replacement. I know the common procedure is to remove the whole case, install the new core outside and reinstall the whole case but time constraints force creative solutions. Now the evaporator core is a different story

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1 Answer

How do i replace heater core on a 2000 Buick Century


You will need to take some of your dash apart . I'll send a link for a youtube video . This is a ford vehicle but pretty much the same . Heater core shortcut

Jan 10, 2015 | 2000 Buick Century

1 Answer

I have a 96 Buick Century , no heat . i replaced the thermostat and added coolant but still no heat . I also cannot find any leaks .


you may have a clogged heater core
the heater core can be found under the dash on the passenger side
hope I could help
leave feedback if you can
good luck

Jan 23, 2011 | 1996 Buick Century

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Heat is turned on sometimes get heat others just cold. Turn heat down might get some 2001 Buick Century


Hi, this symptom indicates restricted flow through the heater core. Recommend you try back flushing the core by removing the heater hoses from the heater core (in the engine compartment) and hooking a garden hose to the lower port using a splice. If the core will not back-flush, replace the core. Please let me know if you have any questions, and thanks for using FixYa.

Dec 17, 2010 | 2003 Buick Century

1 Answer

Where is the heater core on a 1995 Buick Century?


If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Dec 14, 2010 | 1995 Buick Century

1 Answer

How do I change a Heater core on a 1990 Buick Century


Inspect/Replace If it is necessary to remove the heater assembly, the cooling system must be drained before removing the heater core.
When a heater core leaks, a new heater core is installed or the old one repaired.
Heater Housing
  • The heater housing is usually under the dash and must be removed to gain access to the heater core.
  • Procedures for replacing the heater core vary with the year, make, and model of car. It threfore necessary to consult the manufacturer's repair manuals for the proper procedure for replacement.
f74-01.gif The heater housing is disassembled to get to the heater core. Heater Core
  • Remove the access panels(s) or the split heater/air conditioning case to gain acess to the heater core.
  • Remove the heater coolant hoses.
  • Remove the cable and/or vacuum control lines (if equipped).
  • Remove the heater core securing brackets and/or clamps.
  • Lift the core from the case. Do not use force. Take care not to damage the fins of the heater core when removing.
  • To reinstall the heater core, reverse the removal steps.
When the heater core leaks and must be repaired or replaced, it is a very difficult and time-consuming job primarily because of the core's location deep within the firewall of the car. For this reason always leak test a replacement heater core before installation.

Nov 26, 2010 | 1990 Buick Century

1 Answer

How hard is it to replace a heater core in my 2000 buick century. Can I find details on how to replace the heater core on line?


IT SHOULDN'T BE TOO DIFFICULT IF YOU HAVE THE BASIC TOOLS AND KNOW HOW TO USE THEM,YOU CAN GO TO THE AUTOZONE WEB SITE AND SIGN UP FOR THE FREE REPAIR GUIDE,THEN YOU JUST LOOK UP YOUR PART AND THEN CLICK ON THE REPAIR GUIDE WINDOW AND THEY'LL SHOW YOU HOW TO INSTALL IT.

Oct 07, 2010 | 2000 Buick Century

1 Answer

2000 Buick Century. Blower quit working for


I had the same problem. It turned out to be the ignition switch. i have no idea how that is connected to the fan but... it worked, got me my fan speeds back, although it is not working again...

Jul 16, 2010 | 2000 Buick Century

1 Answer

I need to replace the heating core in my 88 buick century. Where is it located?


Follow the heater hoses under the hood.Where they go thru the firewall look on the inside.If you have AC it will be off set if no AC the straight back from hoses.Will be encase in all of the black plastic and duct work.

Dec 31, 2009 | 1988 Buick Century

1 Answer

Water on floor board on passenger side of 1991 Buick Century


Engine coolant will feel oily and the windshield will fog up and the car will stink. If it is just water it could be coming from the passenger door weatherstrip at top. The ac drain tube , if stopped up will also leak water in the floorboard.

Jun 17, 2009 | 1991 Buick Century

1 Answer

Possible heater core problems


that smell is coolant and yes you need to replace the heater core.

Mar 26, 2009 | 2000 Buick Century

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