Workers at Chrysler-owner Stellantis are still in early voting but have so far largely backed the contract.
GM's Spring Hill Assembly plant in Tennessee on Monday became the most recent major facility to vote against the contract, with 67.5% of UAW members rejecting it.
Reasons behind the disapproval vary, according to industry experts and UAW members who spoke with CNBC.
GM has had 52% of workers voting so far in support of ratification.
He said these benefits remain a target for future bargaining when the tentative deals, if ratified, expire on April 30, 2028.
Persons:
Jim Vondruska, they've, Stellantis, They're, There's, Shawn Fain, Brian Keller, Ford, Fain, we'd, Keller, Ray Curry, Timothy Orner, it's, Orner, China Jones, Wheaton
Organizations:
UAW, Getty, DETROIT, United Auto Workers, Detroit, Ford Motor, Motors, Workers, Chrysler, Ford, CNBC, GM, U.S, Louisville Assembly Plant, Worker Institute, Cornell University
Locations:
Chicago , Illinois, Hill, Tennessee, GM's Flint , Michigan, Kentucky, Stellantis, Toledo, China, Louisville