wtf is this black box?

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Sep 1, 2011 | 11:51 AM

SpadedJimmy

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Joined: Aug 2011

Posts: 21

wtf is this black box?

Looking to get a quote on my exhaust and while getting my catalytic converter replaced, i noticed a black box under the driver rear quarter panel back near the bumper on my 97 Jimmy 4x4 4 door. Wtf is this? Fuel pump?

Sep 1, 2011 | 12:04 PM

swartlkk

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Joined: May 2005

Posts: 41,333

From: Waterloo, NY

EVAP canister.

Sep 1, 2011 | 12:16 PM

SpadedJimmy

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Joined: Aug 2011

Posts: 21

What exactly is its purpose? Does it affect anything if it is bad?

Sep 1, 2011 | 11:41 PM

cbr995

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Joined: Jul 2009

Posts: 1,910

From: Titusville, FL

I think it keeps gas vapors from entering the air.

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