GM and the union could reach an agreement to end the strike here at weekends, sources said

While the United Auto Workers' strike at General Motors is approaching its second full week, progress has been made at the bargaining table, sources told ABC News.

An agreement could be reached this weekend if progress continues, told ABC News a source close to the UWW.

Negotiations with GM have entered a new stage and moved to the main table. In recent days, discussions have been limited to smaller committees, with both parties struggling to find details, UAW sources added.

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The Vice President of the UAW, Terry Dittes, sent Wednesday to the members an update confirming that "all the outstanding proposals are now at the main table and have been presented to General Motors, and we are waiting for their response ".

"This back and forth will continue until the negotiations are over," said Dittes.

Nearly 50,000 unionized workers left their jobs on the night of September 15th. They went on strike nationwide at General Motors after the expiry of a contract of employment and the negotiation of a new contract.

Union leaders have argued that GM workers deserve a larger share of the company's profits, which would have totaled $ 35 billion in North America over the last three years. Union members are demanding fair wages, saying that for every dollar earned by a GM employee, President and CEO Mary Barra earned $ 281.

They are also fighting for the maintenance of a health insurance plan in which workers pay about 4% of the costs, an improved pension and assurances that GM, builder Buick, Cadillac, GMC and Chevrolet manufacturers, will not close four factories in North America. Maryland, Ohio and Michigan.

The strike comes nearly a year after GM announced the dismissal of 15% of employees and the closure of five plants in North America.

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A GM spokesman told ABC News on Thursday: "We continue to talk and our goal is always to reach an agreement that builds a better future for our employees and our society."

GM argued that its offer to the union "gives priority to employees, communities and builds a stronger future for all".

"This includes improved wages and benefits for health care, investments of more than $ 7 billion in the US and 5,400 jobs," says an article on GM's Twitter page.

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The strike drew the country's attention and prominent political figures, including the 2020 presidential candidates Elizabeth Warren and Joe Biden, joined the picket lines and expressed solidarity with the striking workers.

The economic impact of the strike was felt by GM workers in Canada, where hundreds of people were temporarily laid off at a GM plant in Oshawa as a result of the strike. GM suppliers also indicated that they were closely following the negotiations to see if they were to reduce their workforce if the strike continued.

ABC News & Whitney Lloyd contributed to this report.