Almost two months ago, General Motors decided to stop running ads on the social networking website, Facebook.

It seems the U.S. automaker has changed its mind. 

Official sources reveal that both companies still remain far from reaching an agreement on paid ads, but there have been talks. Facebook was not pushing for General Motors' immediate return but offered to provide the data showing the effectiveness of the website's paid ads, an official source said.

According to sources, Sheryl Sandberg, Chief Operating Officer of Facebook, sent an e-mail to Dan Akerson, Chief Executive of General Motors, to reconsider their decision shortly after the car company decided to pull back from its paid ads.

The decision by GM seriously undermined the confidence of Facebook on the eve of its highly-anticipated initial public offering.

Sources said, that at a global advertising conference in Cannes, France, last month, Facebook global sales head Carolyn Everson sought out General Motor's marketing chief Joel Ewanick to continue face-to-face talks, leaving open the option of GM returning to the fold. Facebook did not offer any concessions instead it refused to provide information to the media.

The decision to withdrawal paid ads in Facebook by GM was the first highly visible crack in Facebook's strategy. Sources believe GM invested more than $10 million in the social networking website. GM further emphasized during its withdrawal that it would retain its Facebook pages, which was free of cost, and will market its trucks and cars.

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