Need help
 

Was on the dyno, and went to slow down, hit the paddle shifter to downshift and 'service traction control' came on..
When it did that, I can't downshift using the paddle shifters, cruise control don't work and when in D and you give it full throttle, it don't downshift.

I checked some fuses, took battery cable off fr 30 min and nothing.

anybody got any ideas?