I got it fixed, they performed the throttle relearn procedure at the GM dealership, this is a NNBS yukon and it isnt like the previous models, I used to fix idle problems on the previous style LS motors by cleaning out the throttle body, performing the capacitive discharge method touching both leads off the battery after discontecting them and then letting it idle about 10 minutes, but it didnt work this time, also this truck uses a Different PCM, not like the older 99-06 models, so if you know of anyone having this problem, you can let them know what worked in my case, once again thanks for you replies.