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Buick Forum: 2006 CXL Cat Replacement
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  1. #1
    2000UltraSilverBullet is offline Buick Newbie My Buick(s): 2000 Park Avenue Ultra
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    Unhappy 2006 CXL Cat Replacement

    I've got 188k on my CXL (4.6L Northstar) and it's finally thrown the P0420 code for cat conv. replacement. I've got a shop that will do the install for me but I'm finding it hard to confirm the GM OEM part number so I can order a replacement.

    Help!

  2. #2
    HotZ28's Avatar
    HotZ28 is offline Full Member My Buick(s): 1996 Roadmaster Limited Collectors Edition 58k - 1996 PAU
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    Jul 2005
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    Re: 2006 CXL Cat Replacement

    Remove this ad
    You do not need an OEM replacement, other vendors can do just as well. https://www.rockauto.com/en/catalog/...converter,5808
    The cats Item (#28) are NLA from GM!
    https://www.wholesalegmpartsonline.c...rimLevel=25480
    Last edited by HotZ28; April 17th, 2018 at 02:08 AM.
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    1996 PA Ultra Series II - 3.4” pulley (11.5 psi boost), Autolite 104's, MSD coils & wires, 160 deg. T-stat. Flashed '97 PCM, Lucerne 17" Chrome Wheels
    Cold air is OK.....Turbo Charging is better....but, I'd rather be Blown!!



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