2003 Buick Regal

Electrical problem
2003 Buick Regal 6 cyl Front Wheel Drive Automatic

Headlights remain on continously. Daylight/night sensor located on dash appears to have failed. Without the sensor working the dash lights do not brighten because the headlights remain on. My question is: Can this sensor be changed by owner or must it be changed by dealer. If it can be changed by owner. HOW and where can I obtain a replacement?
December 3, 2009.

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