DETROIT (Reuters) -The United Auto Workers union plans to hold strike authorization votes at one or more of its Stellantis ( STLA ) locals in the coming days, union president Shawn Fain said on Tuesday, which could lead to a disruptive walkout against the Jeep maker.

The UAW leader has in recent months called out Stellantis ( STLA ) CEO Carlos Tavares for failing to keep the product and investment commitments the automaker agreed to after the union conducted a six-week walkout last fall.

"We are still waiting for the company to make good on the vast majority of its product commitments. Not all of them are contract violations yet. But we're watching them closely and we're preparing to take action," Fain said in a video address on Tuesday evening.

Local Stellantis ( STLA ) chapters have filed grievances related to the company's alleged plan to move production of the Dodge Durango out of the United States, union leaders said this week.

The union on Monday also filed unfair labor practice claims with the National Labor Relations Board against Stellantis ( STLA ), saying the company refused to provide information about its future product plans.