2002 Pontiac Aztek and my fan switch has 5 speeds but does not work on speeds 1-3?

  • Thread starter Thread starter chaazums
  • Start date Start date
There is a FAN resistor box, under the dash that controls the speed of the fan. This box can go bad all at once or just one speed at a time. Replace it and it will be fine.

Hard to get to though on some vehicles.
 
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