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I completely took out my cat from 05 chevy silverado runs great but after clearing the codes the check engine light stays off until i drive 30 miles or more at one time why?
2005 Chevrolet Silverado SS

I completely took out my cat from 05 chevy silverado runs great but after clearing the codes the check engine light stays off until i drive 30 miles or more at one time why?

(2005 Chevrolet Silverado 1500)
Why does my check engine light wait awhile to come on after cleared after i took out the cat from my 05 chevy silverado? Runs great just need the light to stay off
Tags: chevrolet, silverado 1500
1 answer & 1 comment
Popular Answer
on October 09, 2019

You removed a critical part of the emissions system - that’s why the light keeps turning on !
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on October 09, 2019

It is actually unlawful to remove the catalytic converter from any vehicle that is to be operated on the public highways..

Replacement of the cat is the only cure - that is IF continued highway operation is desired.

Good luck!
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on October 09, 2019

You removed a critical part of the emissions system - that’s why the light keeps turning on !
Sign in to reply
on October 09, 2019

It is actually unlawful to remove the catalytic converter from any vehicle that is to be operated on the public highways..

Replacement of the cat is the only cure - that is IF continued highway operation is desired.

Good luck!

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