The deal, which was reached late Friday, also includes a $2- to $3-per-hour pay raise for entry-level workers over the life of the contract and guarantees of more union jobs, the people said.
Both persons asked to remain anonymous because the details of the contract haven't been reviewed by all local union leaders.
Workers could get profit-sharing checks that are larger than the roughly $4,000 they received based on the company's earnings last year. But the formula was changed so it is tied only to GM's North American financial results, said the people.
The GM deal will serve as a template for contracts that still must be negotiated with Chrysler Group LLC and Ford Motor Co. It would set the pay and benefits for 112,500 U.S. auto workers. It also will set the bar for pay and benefits at nonunion auto companies and other industries across the country.
The contract is the first since GM and Chrysler received government bailouts to make it through bankruptcy protection in 2009.
The UAW and GM would not give details of the contract. Union President Bob King said he won't talk about them until local union leaders are briefed on the pact Tuesday in Detroit.
Workers have to approve the deal before it can take effect. A vote is expected within 10 days.
The union said in a statement Friday that the contract includes some of its major goals, including improved profit-sharing, new jobs and better health care benefits.
The deal also will include creative ways to cut GM's hourly labour costs. GM pays around $56 per hour including wages and benefits, which is less than what Ford pays but far higher than other companies like Chrysler and Hyundai Motor Co.
GM was the first of the Detroit Three to reach agreement with the UAW. Chrysler is likely to be next, followed by Ford, where little progress has been made in negotiations so far.
The UAW announced the GM agreement just after 11 p.m. EDT Friday, after a little more than seven weeks of closed-door bargaining.
It was unclear whether GM would reopen the Spring Hill Assembly Plant in Tenn., which was built in the 1980s to assemble the Saturn small car brand to compete with the Japanese. The plant was closed in 2009.
King and GM CEO Dan Akerson have said they don't want the company to reopen plants unless they're needed to satisfy demand for new vehicles.
Mark Reuss, GM's North American president, has talked about making Spring Hill a flexible plant that could build any GM model. It would be used to satisfy demand for hot-selling vehicles. Company leaders, though, have been reluctant to reopen factories for fear of being stuck with costs if sales drop.
The UAW's statement also said that it successfully fought efforts by GM to weaken the defined-benefit pension plan, which is among the best in U.S. manufacturing.
The company also wanted health care cuts, but the union protected and improved those benefits, the statement said. But it did not say if workers will see higher co-pays or monthly premiums. GM had sought higher payments from workers.
GM workers reached early Saturday were happy a deal had been reached but anxious about the details.
At Spring Hill, laid-off worker Todd Horton was hoping the promise of new jobs would mean reopening the assembly plant where he used to work.
"I know a lot of members are holding onto that hope that they will bring jobs back to Spring Hill," Horton said.
Bobbi Marsh, a worker in Lordstown, Ohio, near Cleveland who is paid the entry-level wage, said a raise would be nice, but she's more concerned about job security. Marsh was hired in 2008 to help make the hot-selling Chevrolet Cruze compact car. She's worried that if sales slow, she could get bumped out of work by people with more seniority.
"If they want to throw us a dollar or two, I'm very excited," she said. "I really just need to keep my job."
GM has about 2,400 entry-level workers who make $14 to $16 per hour, about half the pay of a longtime UAW worker. The union agreed to the lower wage as Detroit automakers ran into financial troubles in 2007.
GM's contract with the union expired Wednesday, but it was extended while negotiations continued. In the past, workers might have gone on strike when the deadline passed. But this year, GM and Chrysler workers had limited ability to strike under terms of the companies' government bailouts.
The White House will be among those looking for terms of the deal. GM received a $49.5 billion government bailout two years ago and is still part-owned by the U.S. Treasury. An agreement that is favourable to GM could help the company's stock rise, which would get the Treasury closer to making back the money it is owed when it sells its remaining shares.
After its trip through bankruptcy protection, GM is making money again, posting a $4.7 billion profit last year.
The union hopes to show that it can work co-operatively with auto companies as it tries to unionize U.S. factories owned by Nissan Motor Co., Volkswagen AG and other foreign automakers. King said the union remains committed to organizing those plants.
"As long as unionized workers are being forced to compete with nonunion workers who in most cases receive lower pay and benefits — many in temporary jobs — there will continue to be a downward pressure on the wages and benefits of all auto workers," he said in a statement.
The union's focus on GM slowed the Chrysler negotiations and drew an angry response earlier in the week from CEO Sergio Marchionne.
Marchionne then left the country, so it's unlikely a deal will be reached until he returns next week.
Talks at Chrysler will continue through the weekend. They'll resume Monday at Ford.