Course of the strike
Following the walkout, protesting commenced outside the factory, and the strikers were joined by some workers from the nearby Timken Axle manufacturing plant. Many of the workers gathered in a nearby vacant lot where they listened to a speech given by IWW members. Around noon, about 600 workers, led by a worker waving an American flag, began to march across the city to Studebaker's #1 plant (located in the former Ford Piquette Avenue Plant) at Piquette Avenue and Beaubien Street, roughly 7 mile away. By the time they reached the other factory, the police were already there and blocked the strikers from the building. Despite the police presence, the strikers managed to recruit several hundred workers from the #1 plant and continued their march to Studebaker's #5 plant, located near Franklin Street and St. Aubin Street. While some skilled workers, such as metal polishers and iron molders, expressed sympathy for the strike, tool makers organized under the American Federation of Labor (AFL), a craft union-oriented labor federation that was generally at odds with the IWW, refused to strike. While the main cause of the strike concerned the pay schedule, achieving the eight-hour day soon became another goal. By the end of the day, the strikers held a rally and elected strike leaders. Reflecting the immigrant composition of the workers, speeches at the rally were given in English, German, Polish, Russian, Slavic, and Yiddish.
Following the initial walkout, the strikers continued to rally and recruit more members from the Studebaker plants, with several sources stating that about 6,000 workers were involved in the strike. The police maintained a presence at these rallies and at speeches given during the workers' lunch hours, the police ordered some speakers to cease when their speeches became more extreme. In addition to Studebaker employees, there were plans to spread the strike to other companies, such as Cadillac and Packard. On June 19, strikers met at Plant #1 and proceeded to march to the Packard plant in an attempt to recruit their workers. The march to the Packard plant on East Grand Boulevard involved about 2,000 strikers and was initially peaceful. The strikers marched around the plant once before police officers, including mounted police, skirmished with the strikers, clubbing many and arresting some of the strikers and IWW members. Walsh, who had been severely beaten, later led a group to protest the arrests and talked to the chief of police, who agreed to allow the strikers to continue picketing but barred them from holding large marches or parades.
On June 20, strikers held a meeting, presided over by Robbins, where they came up with a list of demands for Studebaker. Among these were a weekly pay schedule, an eight-hour day with the same pay as for a ten-hour day, improved working conditions, and no retribution to strikers following the end of the strike. These demands were printed on leaflets and distributed throughout the city to generate support for the strike. By this time, the strikers were facing a difficult situation. Several days after the strike had begun, Studebaker announced a policy whereby employees could receive 70 percent of their pay halfway through the two-week pay period. This slight concession placated several workers who had initially opposed the change in pay schedule. Additionally, May through September was traditionally considered the off-season for automotive manufacturing; as a result, many unemployed people were ready to take the strikers' jobs. Around this time, the EAD had also begun providing Studebaker with strikebreakers. Due to this, on June 23, the strikers voted to end the strike.