Assembly Magazine logo
search
Ask ASSEMBLY AI
cart
facebook twitter linkedin youtube
  • Sign In
  • Create Account
  • Sign Out
  • My Account
Assembly Magazine logo
  • TRENDS
    • Ask ASSEMBLY AI
    • Trends
    • News
    • New Products
  • INDUSTRIES
    • Aerospace
    • Appliance
    • DFMA Assembly
    • Medical Devices
    • Green Manufacturing
    • Lean Manufacturing
    • Machinery Assembly
    • Electronics Assembly
    • Automotive
  • TECHNOLOGIES
    • Adhesives & Dispensing
    • Assembly Presses
    • Automated Assembly Systems
    • Manufacturing Management
    • Manufacturing Software
    • Motion Control
    • Screwdriving & Riveting
    • Robotics
    • Test & Inspection
    • Plastics & Metal Welding
    • Wire Processing
    • Workstations
  • AUTONOMOUS & ELECTRIC MOBILITY
    • AEM Magazine Archives
    • Autonomy
    • Electrification
    • Mobility Services
    • Assembly & Testing
    • AV/EM News
  • MEDIA
    • Ask ASSEMBLY AI
    • Podcasts
    • Assembly News Now
    • Assembly TV
    • Webinars
    • eBooks
  • EVENTS
    • Calendar
    • The ASSEMBLY Show
  • MORE
    • Exclusives >
      • Plant of the Year
      • Capital Spending
    • Buyers Guide >
      • Supplier Insights
    • Classifieds
    • Featured Products
    • Newsletters
    • Store
    • White Papers
    • Columns
    • Sponsor Insights
  • INFOCENTER
    • Assembly & Test Solutions
  • EMAGAZINE
    • eMagazine
    • Archive Issues
    • Advertise
    • Contact Us
    • Sign Up
Automotive Assembly

Workers at GM’s Mexico Assembly Plant Vote Out Old Guard Union

GM Mexico
February 8, 2022

SILAO, Mexico—Workers at two General Motors’ assembly plants here voted for a new independent union to represent them after ousting an old guard union last year, according to results announced Feb. 3.

The vote among the roughly 6,500 employees of the factories, which assemble transmissions and pickups, was a major test of whether a measure of freedom has come to Mexico, where pro-company unions held wages down for decades and drained manufacturing jobs from the U.S. When finally given the chance to vote by secret ballot on which union would represent them—something it took a U.S. labor complaint to achieve—the results from the voting Feb. 2-3 weren’t close.

The Independent Union of Auto Industry Workers, known by its initials in Spanish as Sinttia, won 76 percent of the roughly 5,500 votes cast. The old-guard Confederation of Mexican Workers, the CTM, which long dominated the plant, won less than 1,000 votes.

“I want all the workers to see it can be done, because this is the start of a new change in unionism,” the leader of the Sinttia independent union, Alejandra Morales Reynoso, said after the vote. “I think we are going to start showing all our colleagues that a real change can be achieved, not just here in Silao, but in the state, the country and in the whole world.”

In a statement, GM called it “an unprecedented exercise in democracy,” and said “General Motors will act in compliance with the law to work with the union representation elected by the workers.”

The United Auto Workers said in a statement it welcomed the results.

“The UAW congratulates the workers of GM Silao on forming a free, fair and independent SINTTIA union,” according to the statement. “We commend the Biden Administration and USTR (U.S. Trade Representative) for ensuring a fair election process and we look forward to a new era of free, fair, independent unions in Mexico.”

That was a reference to a U.S. government labor complaint filed last year under the U.S.-Mexico-Canada free trade pact. Under changes to Mexican labor law required under the USMCA, workers can now in theory vote out the old, pro-company union bosses. But in practice, the old union bosses resisted.

Looking for quick answers on assembly and manufacturing topics? Try Ask ASM, our new smart AI search tool. Ask ASM →

KEYWORDS: labor unions Mexico automotive industry Mexico manufacturing USMCA

Share This Story

Looking for a reprint of this article?
From high-res PDFs to custom plaques, order your copy today!

Recommended Content

JOIN TODAY
To unlock your recommendations.

Already have an account? Sign In

  • Made in the U.S.A.

    Consumer Products Manufacturing: Made in the USA

    Supply chain lessons learned during the coronavirus...
    Automated Assembly Systems
    By: Austin Weber
  • Best Practices for Press-Fit Assembly

    Best Practices for Press-Fit Assembly

    In manufacturing, ironclad formulas for success are hard...
    Assembly Presses
    By: Jim Camillo
  • aem0523leader-tesla1.jpg

    Tesla Rethinks the Assembly Line

    Engineers at Tesla Inc. have developed a new process that...
    Electrification
    By: Austin Weber
Manage My Account
  • eMagazine Subscription
  • Assembly Newsletters
  • Online Registration
  • Subscription Customer Service
  • Manage My Preferences

More Videos

Sponsored Content

Sponsored Content is a special paid section where industry companies provide high quality, objective, non-commercial content around topics of interest to the ASSEMBLY audience. All Sponsored Content is supplied by the advertising company and any opinions expressed in this article are those of the author and not necessarily reflect the views of ASSEMBLY or its parent company, BNP Media. Interested in participating in our Sponsored Content section? Contact your local rep!

close
  • ultrasonic welding
    Sponsored bySonobond Ultrasonics

    Engineering Efficiency in High-Performance Assembly: How Ultrasonic Welding Enhances Throughput, Reliability and Quality

  • UV curing system
    Sponsored byDymax

    Why UV Intensity Alone Doesn’t Define Curing Performance

  • wooden pallets
    Sponsored byLEAN Manufacturing Products

    Eliminating Waste on the Shop Floor: Applying Lean Principles to Improve Manufacturing Efficiency

Popular Stories

ASSEMBLY News Now, episode 30: Volvo Redesigns EV Manufacturing

Volvo Redesigns EV Manufacturing

Boeing CEO Kelly Ortberg announces 1 billion investment

Boeing Plans $1 Billion Wichita Investment, Workforce Training Center

GE Appliances Worker on Line

GE Appliances Expands Factory AI With 800 Gemini Enterprise Agents

Watch the latest episode of ANN now!

Events

July 24, 2025

From Shop Floor to CFO: How Manufacturers Are Closing the Loop Between Operations and Finance

On Demand Learn how manufacturers are bridging the gap between the shop floor and ERP systems to gain real-time visibility, streamline operations, and kick-start digital transformation—without waiting years.

Sponsored by:

PicoStratusGreen
July 30, 2025

Buffer Analysis and Design Fundamentals for Manufacturing Excellence

On Demand In this presentation, Dr. Herman Tang shares practical insights from his industry experience and research on buffer management in manufacturing operations.

View All Submit An Event

Poll

Difficult Assembly Processes

Which assembly process gives you the most difficulty?
View Results Poll Archive

Products

Manufacturing Cost Policy Deployment (MCPD) Profitability Scenarios: Systematic and Systemic Improvement of Manufacturing Costs

Manufacturing Cost Policy Deployment (MCPD) Profitability Scenarios: Systematic and Systemic Improvement of Manufacturing Costs

See More Products
Register for webinar - Modernizing Automotive Assembly: Why Upgrading Legacy MES is a Business Imperative

Related Articles

  • GM Mexico assembly plant

    Workers at GM Factory in Mexico Vote on Union Membership

    See More
  • GM Strike 9-18

    50,000 Union Workers at GM Walk Out Over Wages and Idled Plants

    See More
  • Workers at Canadian Seating Plant Vote for Strike

    See More

Related Products

See More Products
  • cover

    ASSEMBLY October 2019 Issue

See More Products

Related Directories

  • ATS Automation

×

Never miss the latest news and trends driving the manufacturing industry

Stay in the know on the latest assembly trends.

JOIN TODAY!
  • RESOURCES
    • Advertise
    • Contact Us
    • Directories
    • Manufacturing Division
    • Store
    • Want More?
  • SIGN UP TODAY
    • Create Account
    • eMagazine
    • Newsletters
    • Customer Service
    • Manage Preferences
  • SERVICES
    • Marketing Services
    • Reprints
    • Market Research
    • List Rental
    • Survey/Respondent Access
  • STAY CONNECTED
    • LinkedIn
    • Facebook
    • Instagram
    • YouTube
    • X (Twitter)
  • PRIVACY
    • PRIVACY POLICY
    • TERMS & CONDITIONS
    • DO NOT SELL MY PERSONAL INFORMATION
    • PRIVACY REQUEST
    • ACCESSIBILITY

Copyright ©2026. All Rights Reserved BNP Media, Inc. and BNP Media II, LLC.

Design, CMS, Hosting & Web Development :: ePublishing