guy delevered my truck 2 day 98 dodge ram 1500 4x4 when i test drove this truck i took it out on the interstate ran great no problems then went to a back road put it in drive and reversr many times to make sure everything worked right and engauged the 4 wheel to make sure it worked everything worked fine 2 day when he dropped the truck off i went to the truck and started it up when i put it in reverse it made a grinding sound!and slowly went in to gear this did not happen the whole time i was test driveing it any input from you guys

 

welcome to df.
there is a common problem where the transmission makes a mild groan to a terrible clatter when its in reverse and everything is very cold.

shift to neutral for a minute or so, maybe even drive forward a little to get things warmed up a little. if the sound goes away, its the cold temperature noise from the regulator? valve.

report back.

 

A "clunk" when shifting into reverse is very common in these trucks.

Grinding however is not

 

The only time my truck made a grinding noise was when i didn't completely move the transfer case shift/lever/thingy back into 2H. Make sure the drive selector is firmly locked into 2H.

 

My truck wines in reverse when its cold been doing it for about 2 years now lol still shifts like a champ .

I dunno what it could be

 

Mine moans and groans pretty bad when cold in reverse. Grinding it does not, however.