Re: GMC Sonoma: Whats This?

Hello guys, just wondering what this tube is on my exhaust. It's between the

>manifold and the cat on the pipe. Could I have 2 cats?

A pre-cat maybe? Maybe a resonator. Also, I'm not the usenet patrol, but please post images and such in Binary newsgroups. Fewer people will see your image if you post it on a non-binaries group, many news servers strip the files. You could also post the image on web space someplace (some ISPs give you some with your account) and post a link...

Reply to
Mike Levy
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Likely one of the following:

-That is a pre-catalyst, and you do have two converters

-That is the converter, and what you thought was the converter is actually an exhaust resonator.

Reply to
Robert Hancock

Repair manual says the pipe AFTER that tube is the cat. And what's a resonator?

P.S. Sorry about posting that image here.

Reply to
Gravity

A resonator is a device that's put in to alter the resonance characteristics of the exhaust system, I believe it allows them to use a less-restrictive muffler to cut exhaust noise.

What year is this truck?

Reply to
Robert Hancock

The truck is a 2002

Reply to
Gravity

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