Never had any issue with unusual noises until we took it in about 2 months ago for a voluntary recall on the cruise control. Got it back and now it makes fluttering/knocking noises when we accelerate from a stop, turning in either direction or just going straight. Not every time but most. Took to two dealerships who said that is normal engine noise. Willing to let it go but curious if anyone else has this? I found the timing of this highly suspicious.