The track was originally released in February 2012 as the third single from Sticks + Stones, featuring guest vocals from X Factor USA contestant and rapper Astro.
Lloyd will release a solo version of the song in the US in the next few weeks, followed by the Snoop Dogg remix, as she launches her career in the States.
"America is a priority for me and it feels like it's a fresh start. I'm taking it seriously. I'll be out there for three weeks in May to get the ball rolling," she told the Sunday Mirror.
X Factor USA judge LA Reid is masterminding her US launch after signing her to Epic Records. He is currently planning a party in New York to introduce Lloyd to the US media.
'Want U Back' is already receiving heavy airplay on Sirius Satellite Radio and a performance on Late Show with David Letterman is being lined up. She is also in talks to support a "huge" artist on their nationwide tour.
"It's an amazing initial reaction to Cher. She's overwhelmed. The plan is to go out there for three or so weeks and introduce herself to America," a source added.
> Cher Lloyd starts work on new album: "I've done a few songs"
> Cher Lloyd: 'I'm going to smash open some doors in the US'
Watch Cher Lloyd in her video for 'Want U Back' below: