2007 sts-v catalytic converter issues. Should i replace?
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Cadillac STS-V Series Forum Discussion, 2007 sts-v catalytic converter issues. Should i replace? in Cadillac V-Series Forums; Hey Guys, i just threw an engine light and the dealership says its a damaged Cat connected to my aftermarket ...
  1. #1
    tumblrCTS is offline Cadillac Owners Member
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    2007 sts-v catalytic converter issues. Should i replace?

    Hey Guys,
    i just threw an engine light and the dealership says its a damaged Cat connected to my aftermarket exhaust.
    I purchased the extended warranty but they say its not covered.
    They want to charge me $150 to replace it since the exhaust is aftermarket.

    1. Should i be charged since i bought extended warranty that covers mechanical and electrical?
    2. Is it safe to run the way it is (with damage)? This is my first supercharged car, so im concerned that it may hurt the car.

    I've gutted the cats in previous vehicles (2000 Trans Am Ws6 and my C6) and it sounded amazing and ran pretty good in my opinion.
    Anyhoo i know $150 isn't that much, considering it COULD be a few hundred bucks for the cat replacements.

    Thoughts?

    ----------

    FYI - i should note that the aftermarket exhaust was already installed when i purchased the vehicle.

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    cadi509's Avatar
    cadi509 is offline Cadillac Owners Connoisseur
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    I know some guys gut the cats and gain 10-15 hp and I plan on doing it too with corsa exhaust but you will throw a code and check engine light but if you use timmyc's tuner it will take this away

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    Ludacrisvp's Avatar
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    What exhaust is it and was it axle back or cat back?

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    1madstsv is offline Cadillac Owners Connoisseur
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    Re: 2007 sts-v catalytic converter issues. Should i replace?

    So I don't know what they are replacing for $150. A new cat for this car I $800+ it's the entire manifold. They are back ordered for months last I knew. And if its the cat I will clog up to the point the car will not run right. So for $150 I don't think it's a cat. I would bet 02 went bad.

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    Ludacrisvp's Avatar
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    Re: 2007 sts-v catalytic converter issues. Should i replace?

    Its possible that the warranty company (whoever it is) is willing to pay $XXX and are asking you to pay the $150 difference between what they will pay and what the part actually costs and using the exhaust as the excuse for not covering the whole part.

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    1madstsv's Avatar
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    Re: 2007 sts-v catalytic converter issues. Should i replace?

    Cats are covered buy gm for 10 years / 100k.

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    TimmyC is offline Cadillac Owners Connoisseur
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    Re: 2007 sts-v catalytic converter issues. Should i replace?

    emissions warranty is 8/80.

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    fast_lane10 is offline Cadillac Owners Fanatic
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    Re: 2007 sts-v catalytic converter issues. Should i replace?

    I wish this happens to me soon, so that I can get it replaced it under warranty, as I know its going to happen eventually.

  10. #9
    CMNTMXR57 is offline Cadillac Owners Enthusiast
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    Re: 2007 sts-v catalytic converter issues. Should i replace?

    I was gonna say, Federal Emissions warranty is 8/80.

    Was this a P0420 or P0430. These are fairly common GM codes.

    My suggestion before replacing catalytic converters, is give the post-cat O2 sensors a good cleaning and/or replacement before replacing the cats. 9 times out of 10, it's a clogged, and/or faulty post-cat O2 sensor first. Basically, the PCM isn't correctly measuring the amount of oxygen storage capacity that the cats have, by comparing it with what the pre-cat HO2S's are reading and adjusting fuel trims. Hence the code.

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