just seeing whats wrong with my car on 1996 Lexus LS400

my car was driving fine until one day i put it in reverse and sound like something was catching in the back. so now when i put it in drive its doing the same .it make seems like my car has hopped into netural

Asked by for the 1996 Lexus LS400
The rear end may be going bad. Bring it by the shop, and I'll go for a test drive with you. No charge.