whats specific driver cycle on 2010 Cadillac STS

I took my cadillic to emmssion and the the guy said it did not read they told me I need to find what is the specific drive cycle for the computer to read

by in Scottsdale, AZ on February 11, 2013
1 answer
ANSWER by on February 11, 2013
drive 45 mph for approx 5 miles and do not touch brake pedal and slow to 20 mph and then pull over and turn off car. do this at least 2 times