Had the recall software installed. I want to thank General Motors for keeping my truck up to date and operating safely. I now understand what a Ford owner feels like by getting such shitty fuel economy. Instantly dropped by 3-4 l/100 km. I was hoping that it would get better like it did after 5000km when new. I have an Edge CTS3 monitor installed, the EGTs are running higher on normal cruise, but cooler during a burn. I also do burns at least twice as often as before the upate. Thank you GM for screwing us during the highest fuel cost ever.