The grandson of mobster John Gotti was busted Thursday night for possessing painkillers and steroids after he was pulled over in Queens, sources said.

John Gotti, 23, was in a car with Shaine Hack, 36, when they were pulled over for having tinted windows, according to law-enforcement sources.

Officers found the drugs in the car and the two were taken to the 106th Precinct station house and charged felony drug possession.

Gotti was awaiting arraignment at Queens Criminal Court Thursday night.