I'm having that dreaded gravel on metal sound from the drivers side front wheel. I started with replacing the check valve(it was shot) so that helped a bit, next is the Solenoid valve and actuators. I found a video on youtube that gave a really nice breakdown of how to do it and figured I would share. Hope this helps someone else who hasn't ever done this before.

 

That guy makes very good videos. Clear, to the point, and accurate. Only guy I recommend as well.

 

Good video