The most likely cause is the turn signal flasher.
http://www.topix.com/forum/autos/chevrolet-impala/T4P2NGT979PJ7QT2P
You need to take it to a repair and have then scan the system for codes and diagnosis it. It could be as simple as dirt on a sensor.
Time to change your oil in your engine!
Add brake fluid
The cruise sensors have detected a malfuntion and you should probley take it to a Chevrolet Certified Repair Facility.
It requires a scanner to properly diagnosis a check engine light.
There is one screw that holds the fog light it into place.Unscrew that screw and the fog light will pull out of the bumper.
It could possibly
As per the instructions on page 5-55 of your "Owner's Manual"...
It could be a number of things, you need to have the computer scanned to find out what is wrong.
It means your alternator (generator) is not charging the battery while the engine is running.