how can car pass emission test. O2 sensor and cataly not ready. drove it 1600 mi on 2009 Pontiac Vibe

I recently had my alternator replaced, if I change the battery, how much longer will I have to drive the car to pass test?

by in Decatur, GA on July 08, 2013
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1 answer
ANSWER by , July 09, 2013
have those systems ck'd as they should have reset by now