The UAW announced Wednesday it had reached a preliminary bargain but said the strike would continue until its national council approved the agreement and the stoppage could be extended until the full membership votes.
A meeting with the UAW national council was still going on as of midday Thursday.
A GM spokesman declined to comment on the UAW's summary.
Key UAW selling points to workers include: an $11,000 ratification bonus to workers; wage increases of three and four percent throughout the four-year contract; no increases in health care costs; and a path to permanent worker status within four years or less.
But the preliminary deal largely came up short of union demands after GM in November 2018 effectively shuttered plants in Michigan, Ohio and Maryland by "unallocating" investment from the facilities.