front end 4x4 noise in reverse????

[08medic4x4]

should this be? 08 4x4, in reverse sounds like gears hitting metal on metal, not a grinding, but a knocking if that makes sense? only notice in reverse.

 

[4running1990]

Could be bad CV joints

 

[90toytruck.]

should this be? 08 4x4, in reverse sounds like gears hitting metal on metal, not a grinding, but a knocking if that makes sense? only notice in reverse.

ck your u joints and cv axles