Hi guys first post on here, just bought a new sierra on Saturday, and when I was driving it home I noticed it was completely dying out at junctions ect when I was dropping to idle quickly, plus if I was cruising along at 60/70 and let off the accelerator I was getting a bit of a noise as if I wasn't getting a good running mix.. The only thing I've noticed is that the sensor on the side of the air flow meter (the name of said sensor would be handy) doesn't look like a great fit but it does seem to be sealed correctly.. Could this sensor be my problem or is it something more common?