2006 CXL Cat Replacement

7
0
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Location
Virginia
Buick Ownership
2000 Park Avenue Ultra
Thread starter #1
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.

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