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2003 chevy trailblazer_lt_ext
967 Posts
Discussion Starter · #1 ·
My recent cat replacement brought me to a lot of threads related to the subject. And it seems that almost daily I'm seeing posts related to loss of power, often without any codes. I have never, in 30 years of owning cars, have had to replace a cat. And I keep my cars and trucks for an average of 135k miles. Of course, I'm also old enough to have owned a few cars without cats, so those don't really count. :D

So I'm curious how many have had to change their cat. I also suspect that more I6s have had to have cat replacements than V8s.

Miles at replacement:
Installed yourself?:

Year: '03
Engine: I6
Miles: 109,000
Installed myself: Yes
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