(Klaus?) After an "updated programming", some 03s and 04s get 13.5MPG?

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(Klaus?) After an "updated programming", some 03s and 04s get 13.5MPG?

#33

11-12-2004, 12:55 AM

dochummer

Hummer Guru

Join Date: Nov 2004

Location: Eastern Washington

Posts: 2,453

dochummer is an unknown quantity at this point

Does anyone know if it has to be done at a hummer dealer? I don't have one in my area, just a gm/chevy dealer. So if I understand correctly, just ask to have all the programs updated to the latest versions? In the end, the vehicle should hopeful have increased mpg....?

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