New company would be worth US$50 billion, with revenue of US$189 billion.
The company called the roughly 2,000 temporarily laid-off workers at Oshawa back Friday to restart production.
A mix of pay raises, lump sum payments and a US$11,000 signing bonus; in exchange for factories closing.
Strike led to a 4.2% decline last month in the making of autos.
Even as talks continue, the company is leery of settling the strike and saddling itself with costs that it will have to pay later.
Year-over-year auto sales had declined for 17 months straight before marking a modest 0.6% climb in August.
The union wants a bigger share of GM’s more than US$30 billion in profits during the past five years.
On Friday, GM halted production on its flex line in Oshawa that produces the Chevrolet Impala and Cadillac XTS and employs about 650 workers.
Garbage truck driver killed when a tire he was inflating exploded.
Unclear what Trump will propose as final fuel-efficiency rules, but in the past has favoured freezing Obama-era mileage standards at 2021 levels.
In August, FBI raided the suburban Detroit home of UAW President Gary Jones as part of the widening federal investigation.
Signs of the times at this year’s show include a slew of new, market-ready electric cars.
Covers 2014 through 2016 model year Focuses built before Nov. 5, 2015, as well as 2014 and 2015 Fiestas built before Oct. 15, 2014.
Lawsuit came a week after four major automakers announced a deal with California to toughen standards for gas mileage and greenhouse gas emissions.
Automaker spent US$1.5 billion on research and development in the quarter.