What does it mean when my battery light,coolant light,and my parking brake light flicker?

Get home asap! Classic alternator dying symptoms.

Check the output voltage while running.

Now would be a good time for saturn alternator & relocation! Some have reported great success with 160 AMP Saturn Alternator. Not quite simple plug and play though. 

Reference: http://www.orldsm.com/showthread.php?13969-Saturn-160AMP-alternator-installed-with-GREAT-RESULTS!&s=8dcfd4229bbcd7a2d710821e649a7ae4

I can not find one good vfaq for this upgrade.