which one is my catalytic converter

2006 HUMMER H3
5 CYL • 4WD • AUTOMATIC
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CHUYARM
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i need my catalytic converter replaced but they show two converters 1 is a manifold and 2nd one is a rear converter which one is the right one
Aug 20, 2011 at 1:45 AM
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SATURNTECH9
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What are you trying to ask?The one on the manifold is your pre or pup cat.Which one is bad?
Aug 20, 2011 at 1:47 AM
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CHUYARM
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gm dealer scanned car and got p0420 code catalyst low efficiency bank 1 recommended converter replacement so i dont really know which one to replace
Aug 20, 2011 at 2:06 AM
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SATURNTECH9
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That would be the rear cat not the manifold one.
Aug 20, 2011 at 2:15 AM
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CHUYARM
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thank you for your help
Aug 20, 2011 at 2:28 AM
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SATURNTECH9
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Your welcome thats what were here for.
Aug 20, 2011 at 3:35 AM