Is there any time that you should change a throttle body or other than it breaks on 2003 Chevrolet Trailblazer

Or should it just be cleaned every 30000 miles

by in Roanoke, VA on November 16, 2012
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2 answers
ANSWER by , November 17, 2012
Anytime the throttle body is broken, you should replace it...why would you replace it if it isn't broken?
ANSWER by , November 17, 2012
you dont have to change the throttle body but you didnt say if you were having problems with it