Hummer Forums by Elcova - ECM difference between 07's and older models

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o2man98

01-10-2009 02:56 AM

ECM difference between 07's and older models

The story is I purchases a JET module 20710 and it is nothing like the plugs for my 2007 ECM. Was there an ECM change for the 2007's like me actually having an 08 exhaust?

Any help appreciated!

o2man98

01-11-2009 05:38 PM

Re: ECM difference between 07's and older models

Anybody know?

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