There are two different catalytic converters on the 2009 Buick Enclave -- one in the Bank 1 position, and one in the Bank 2 position. This is great for the environment, but harsh for Your wallet; You can expect an '09 Enclave to cost between $900 and $2000 to replace, and since You've got two of them, that's the potential for twice the trouble. There's not much You can do to keep them running in tip-top shape, aside from replacing oxygen sensors as soon as Your car calls for it. The most common vector of failure is melting and plugging, so You'll want to do everything You can to ensure that Your exhaust doesn't run too hot.
Mary
March 30, 2023
My 2009 Buick enclave cxl.3.6 how many catalytic converter do my car have?
Mike
June 1, 2020
I have a problem with my Cadillac converter my mechanic had put one a new one in and the emigre light go off my mechanic put a after market one in. They have been fighting it for a year and had to put in a new motor from it and the engine light came back on and the same problem
Leonard K.
August 29, 2019
The 2009 Buick Enclave has 2 (two) catalytic converters attached to the exhaust system of the V6 engine used in the Enclave.
I have a 2011 Enclave CXL and just had to have both new converters and it came to $429.
Kenton
June 7, 2020
How much does it out to replace two Cadillac convertors
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