Reverse gear occasionally disengaged and giving loud noise when you engage

Hi,

I would suggest starting with checking the fluid of the transmission. Then we need to drop the pan and look for metal. If metal is found then we need to rebuild or replace the unit. Once there is metal through the unit, it is only a matter of time before all gears are gone and it will not move.

Let me know when you get the pan down and what you find. Thanks