Hey guys. I have a quick question. I have a 07' NNBS ecsb 5.3 gas 4X4 stock tires, gears, all that stuff. I just turned 20k on it. Anyway my problem is that it is so F-ing loud inside. Is this just how all the NNBS are? and the other is that when I am on the gas it has almost a clinking/ grinding sound in the front drivers side. sounds like the engine. Dealers told me it was the afm, but its not. my dad had afm and his doesnt make the noise. So, if any of you guys have a clue or know what the problem would be let me know. Its getting rediculous for me. thanks in advance.