Does anyone know how this gutless area can be adjusted with tuning.

It seems that in 3rd & 4th gear on my wife's tahoe the pick up in the 2000-3000 rpm range is gutless as hell and feels like the motor is just lugging.

Is there anything that can be done to adjust this and get this thing to wake up a bit in that area?

2008 Tahoe LTZ 5.3L / 4L60E