DETROIT — Leaders of the United Automobile Workers approved a tentative four-year deal with General Motors that includes a more lucrative signing bonus than what Fiat Chrysler workers were given, and $1.9 billion in new investments that will retain or create 3,300 jobs at a dozen G.M. sites. That is in addition to $6.4 billion already announced in 2015.
Wages will be the same as in the Fiat Chrysler contract, which was ratified last week. Entry-level G.M. workers would, over as many as eight years, achieve wage parity with their veteran counterparts. Senior workers would get raises increasing their hourly pay to about $29 an hour.