duggydug1981

hey guys this is my first post on here, i recently had a 6.0 swap into my 99 camaro ss along with cam and a higher stall. the car feels awesome only problem is that around 45 to 50 mph the check engine light starts flashing and the tc wont lock up. just wanted to know if you guys have experienced this and what solution you might have. would it be a tuning issue or something mechanical? thanks in advance.