2005 H2 Cat Questions

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07-12-2015, 10:48 AM

oceanbrave

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2005 H2 Cat Questions

Just pricing up a new cat and as it will be an import (RockAuto) I just need to be double sure that I've got the right one along with any gaskets it needs.

Is there an OEM GM part number for the CAT? (so I can

Who makes the best one?

What gaskets are needed?

If anyone can help it would be much appreciated

07-12-2015, 01:46 PM

liveinxs

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Quote:

Originally Posted by oceanbrave

r

Look here:

Genuine GM Parts for 2005 Hummer H2|Base 6.0L V8 - Gas

07-13-2015, 04:24 PM

oceanbrave

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re CAT

Thanks liveinxs for the much appreciated help this was a whole lot better than the GM service manual!

The error I get occasionally is P0420 "Catalyst System Efficiency Below Threshold (Bank 1)" I'm assuming this is the left side i.e. driver's side (LHD) would this be correct?

Last edited by oceanbrave; 07-13-2015 at 04:27 PM.