I'm getting a po101 and am at a loss on what it is

Question

I've got a 2004 Yukon and am getting a po101. I have changed the maf with factory one cleaned air filter and swapped map out as well. I have pin checked wire to the computer. I can drive around town with the light off but as soon as I hit 1/2 throttle or go on the freeway it sets the code after 2 key cycles. Help please.