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How do you change the cataylic converter on a 2003 Chevrolet Impala?
Updated: 8/16/2019
Wiki User
∙ 15y agoBest Answer
You DO NOT as they are regulated by the Federal Government. For one to be defective it must be checked by a repair shop and they must keep the old one incase someone from EPA wants to inspect it.
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∙ 15y agoThis answer is:
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