Daughter called tonight, drivers side headlight is dim compared to passenger, Trac off light - service engine light - theft light all came on, horn doesn't work nor do door chimes, speedometer fuel an
From your description you have multiple problems that all seem to connect to the BCM, or Body Control Module. This module resides to the left of and under the dash in the kick panel. It controls a lot of the instrument cluster/lights/horns etc. Either the module is going bad or the connector to it. Google how to test for a bad BCM; here is one page that might help: http://www.sparkys-answers.com/2011/09/2000-pontiac-sunfire-odometer-reads.html
Bad or corroded connection or loose ground.
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