that would be your brake pads, when you back-up it shifts.

 

I also have the same clicking noise moving forward and backing up. It all started after the dealer did my fuel hose recall. Did they mess with axles when they worked on the fuel hose? I know they had to disassemble my exhaust.

 

YUP When I don't hold the brake down too hard when shifting to reverse the click goes away. Thanks man!

BTW My brakes are junk, (4 rotors need replacing ) and rusty

 

just take ot to dealer to fix it
its free

 

For sure, free is fine with me.

 

Normal, it's the brake pads.