Normal for the V-6. The direct injection pump is louder than hell, that's the ticking noise you hear while it's running. You should hear a four banger with direct injection like in a Terrain, you'd swear it has a spun rod bearing.
The several noises you hear after shut off are also a couple of the electronic gizmos up under the hood going through there shut down gyrations. First time I drove a V6 a friend of mine owns, we shut it off after opening the hood and heard all those clicks. I think it's the squirrels locking down their wheels.
