Not like this is a new thing
My 2008 GMC Canyon still receives ECM & BCM updates every year or so. Updated fuel tables, power curves, etc. Always have to do a GM Update before using a tuner like HPtuner to get things right. Truck is fly_by_wire but no OnStar, electric locks/windows etc. 2.9l 4 banger only averaged 20.3mpg we purchased new, I've de-GMmed to the point of 27.6mpg average city/highway now with 173k miles on her - she's faster than factory.
The above is also why I'm restoring a 1958 GMC Stepside pickup with three on the tree, it will run under circumstances unfriendly to electronics AND your average American car thief won't know how to row a stick.
Biting the hand that feeds IT
