"Despite our willingness to bargain Ford and GM have refused to make meaningful progress," Fain said in a video address Friday morning.
It began on Sept. 15, when workers struck at one plant each from GM, Ford and Stellantis.
The UAW did not strike at Ford distribution facilities last week, citing progress in talks with that company.
Analysts estimate GM, Ford and Stellantis earn as much as $15,000 per vehicle on each of their respective large pickup truck models.
The Ford assembly plant in Chicago builds the Ford Explorer and Lincoln Aviator SUVs, while the GM plant in Lansing makes the Chevy Traverse and Buick Enclave SUVs.
Persons:
Shawn Fain, GM's, Fain, Stellantis, Friday Fain, Arthur Wheaton, Silverados, Sam Fiorani, Joe Biden, David Shepardson, Joseph White, Ben Klayman, Abhirup Roy, Peter Henderson, Nick Zieminski
Organizations:
DETROIT, United Auto Workers, General Motors, Ford, Chrysler, Detroit Three, GM, UAW, Detroit, Cornell's School of Industrial and Labor Relations, U.S, Workers, Stellantis, Strikers, AutoForecast Solutions, Ford Explorer, Lincoln Aviator, Traverse, Buick, Reuters, Thomson
Locations:
Chicago, GM's Lansing , Michigan, Stellantis, Marshall , Michigan, Milan, Detroit, Lansing