Two different switches. The combination switch on the column is most likely the culprit.
This may be fuses. The turn signals and hazard lights are fed by separate circuits.
Usually on the dash to the right of the steering wheel.
Turn signal flasher?
the hazard switch has two sets of contacts. when hazards turned on, blinkers cannot work,even if hazards dont work.for blinkers to work, hazard sw must be in off position-this reconnects blinker circuits to work normally. BUT-the contacts in the hazard sw get dirty and wont reconnect the blinkers to work
test your multifunction switch,located on left side of steering column
u need to replace with a turnsignal light switch . there is a short in steering column
If you already checked your bulbs then check your fuses, usually this is the case when all the lights stop working at the same time.
The turn signal/hazard flasher is accessed from below the left end of the dashboard with the kick panel removed.
What year is your Impala? 2001
A Hazard light on a car is nothing more then all 4 blinkers going at the same time. Hope This Helps.
Separate circuits.
One fuse controls the function of the hazard, reverse, and turn signals of the car. When there fuse blows all the components stop working.
It shouldn't, if it is installed correctly. If I were you I would consult with a professional.