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2003 Buick Century Heater only works on high

When the heater only works on high, the most common problem is a blower motor resistor. The correct repair is to replace it with a new resistor.

Affected Model Years

This issue affects Buick Century model years 1997, 1998, 1999, 2000, 2002, 2003, .

28 people reported this problem

  • 2003 116,000 Miles
    My heater AC motor does not work on the lowest two settings.
  • 2003 187,000 Miles
    blower motor works on high only the resistor has been changed with no help, the temp. control panel has also been changed with no help what is next.
  • 2003 200,000 Miles
    No heat unless I turn it to high
  • 2003 133,000 Miles
    My heater only worked on high before, and when I would turn it on it would make a horrible screeching sound. The thermostat turned out to be bad, once this was replaced, it seems to work a lot better.
  • 2003 0 Miles
    my heater only works on the high setting, when i turn it on high it makes a loud noise and does not blow heat.
  • 2003 0 Miles
    My low or high setting won't work
  • 2003 73,000 Miles
    low does not work
  • 2003 110,000 Miles
    Had to replace my heater control unit because it only worked on high.
  • 2003 0 Miles
    Heat only works on high. Have not got it fixed as it was winter.
  • 2003 0 Miles
    heat and air controls only work on low and high
  • 2003 0 Miles
    The heater works on high only
  • 2003 101,000 Miles
    Heater blower motor only works on high
  • 2003 108,300 Miles
    Blower only works on high. A/C not coming on at all. A/C light not coming on at all. No leaks in AC as it is holding pressure and correct amount of Freon
  • 2003 84,000 Miles
    heater only works on high

Buick Century 2003 Common Problems