On a blazer 2000 one day the fog lights went off. With it, the buzzer that indicates lights on.
I checked fuse on both fuse boxes (inside and engine) to no avail.

Any ideas?

 

The fog lamps are a fairly complicated circuit involving:

BCM
Fog Lamp Switch
Fog Lamp Relay
Park Lamp Relay
Fog LP fuse
Fog lights
Wires and connectors
Grounds

Do you have a digital multimeter and know how to use it?

Does the fog light indicator on the dash come on with a call for fog lights?


George