Question about 2003 Buick Century

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The directional knob for the heat/air broke in my century. Is there someplace I can get a replacement?

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You may need the whole control assembly.
Check the dealer, junk yard, or check Ebay.
Here's a used one on Ebay:

The directional knob for the heat/air broke in my - !b5-5pdw!2k~$(kgrhqz,!iqeyd6e!oz9bmvw(ytcnw~~_12.jpg

Posted on Mar 25, 2011


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1 Answer

I can only get air from the side vents the control knob moves but dosnt change the air flow direction

Denise; You have a blend door malfunction, cable broke, came off, hinge broke, if motor controlled seized, if vacuum controlled could be hose off or cracked.(I think yours is cable and plastic gear type)
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My blower was working if you can get it to stay on, but now its not feel a tiny bit of heat in my Buick century 2000

It may be a bad electrical connection at the motor, the fuse or the relay. It is easiest to start with the fuse. A relay can be weak or worn out and they also easy to replace.

Jan 05, 2015 | 2000 Buick Century

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I have a 2002 buick century and one of my relay

I have had a couple of problems with a 40 amp relay/fuse blow and the car not starting. Replaced and it started. Have replacement relays in all 3 of our Centurys, 2001 thru 2003 and have not have not had a problem since. If yours continues, likely have a short someplace.

Sep 27, 2014 | 2002 Buick Century

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I have a 2002 Buick Century and my heater will blow air but only heats air occasionally.

If you know where the heater hoses are, lift the hood after car has warmed up I mean the engine running for at least five minutes, feel the heater hoses, if they are warm or hot and still no heat from the heater, you have an in line proiblem. if hoses remain cold, replace the thermostat with a winter thermostat.

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1 Answer

Air/heat not blowing from vents, can feel the heat but it's not blowing, I turn the knobs to high blow and it won't do anything, its cold outside,

if the fan does not increase speed as turned up replace resistor assembly usually in heater housing under dash.if doesn,t nave separate resistor is the fan switch

Feb 11, 2011 | 2002 Buick Century

1 Answer

Heating stays on and no a/c

this is probably in the knob that you adjust the hot/cold, some of these knobs actually run a cable and spring time is the first time its noticed because during the winter if you tried to adjust the knob you adusted it to heat and then tried for cool for fresh air or something, the hinges on doors in the duct work were stiff or grease was solid and put too much on the gear system or cam system that runs the cables and it broke. but you didnt' notice it until spring/summer because you didn't fully need the 'cool' air until then. however if yours is an electric switch then you probably have a bad contact. it is also possible that a vacuum line could be broke, ford used vacuum to move duct doors through the 2000's

Jun 15, 2010 | 1999 Ford Windstar

1 Answer

1998 buick century heat control won't switch between defrost,vent,bilevel etc. has 3 knobs on control head and the furthest right controls this. blower and temp. controls work o.k.

these are common for knobs breaking, pull knob off and look at the back see if its broken, pull a good one off and compare,il bet you its broken, so it doesnt spin the shaft it feels like it is but it doesnt, hope this helps,

Mar 09, 2010 | 1998 Buick Century

1 Answer

I can't change the direction of the heat and air conditioner . The switch to change it from defroster, to floor is broken. how do i fix it?

is it just the knob that broke or the whole thing
you can buy just the knob
if it is the whole thing then you will need to replace the HEATER CONTROL HEAD
hope this was helpful

Nov 14, 2009 | 2004 Pontiac Sunfire

2 Answers


Pull off one of the other knobs and use until you can get a new one from dealer.

Jan 23, 2009 | 2001 Pontiac Grand Am SE

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