i just bought an 2004 silverado ss,it came with a bully dog programmer already installed, the guy recommended that i updated the programmer, so i did, and i put it back in, and now i have a rough idle, its idleing as if its starving for fuel, it will run for a lil bit and then it will stall, while going at slow speeds it stalls, and just idling in park it stalls, please help me ! im so clueless ! i tried pulling the tune and putting it back to stock specs and yet it is still doing it