alert codes

I have a alert code that says (catalyst efficiency below threshold bank

1&2) anyone have a answer to what to change.
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red143
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alert codes Group: alt.autos.4x4.chevy-trucks Date: Sat, May 28, 2005, 10:50pm (CDT+1) From: snipped-for-privacy@heart.net (red143) I have a alert code that says (catalyst efficiency below threshold bank

1&2) anyone have a answer to what to change.

More than likely your Cats S Cook

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Steve Cook

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