05 tahoe 5.3

[murfy27]

traction active comes up on dashboard ,engine goes to idle ,lasts about 3-8 seconds about enough time for someone at a light to run up your butt, it leaves no codes in the computer, i had a friend who wrenches for a gmc dealer 18 years bring home gm scanner -nothing is stored . it does not have ant patern as to when it does it,only thing usually happens in first or second gear. my friend talked me into replacing the throttle body assembly ,did not cure it. recently did 4 wheel brakes on it all sencors looked good no broken wires , intermediate problems suck any help would be appriecd thanks bob 732-600-7910