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ECM controlled Exhaust Brake on 04.5 -05

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Finally got it working on my 05 auto today!  Everything necessary for the ecm to run an exhaust brake is already in the ecm for 04.5 and 05 trucks, it just has to be "turned on".  The reason an exhaust brake works on an 06 and 07 from the factory is they turned it on in the code at the factory.  The 04.5 and 05 trucks have the same parameters in the ecm but were not activated at the factory.







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