Are front and rear O2 extensions the same?
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St. Jude Donor '03-'04-'05-'06-'07-'08-'09-'10-'11-'12-'13
different color and different locating pins so they are not interchangeable but I think the wire connections are the same if that makes sense. One nice thing GM does, they try to make the wiring on the cars as simple as they can so you don't plug things into the wrong item.
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2scary (01-07-2017)