# How General Motors uses GitHub copilot

**8,000 developers**: “over 8,000 developers began using GitHub Copilot across more than 55 languages”

As published on [github.com](https://github.com/customer-stories/general-motors), January 2026. Captured by usedby on 2026-10-02.

- Company: [General Motors](https://www.usedby.ai/companies/general-motors.md)
- Tool: [GitHub copilot](https://www.usedby.ai/tools/github-copilot.md)
- Industry: [Automotive Manufacturing](https://www.usedby.ai/companies/industry/automotive-manufacturing.md)
- Teams: Engineering, DevOps Tool team

## What the story says

GM developers use GitHub Copilot across many languages and IDEs to speed up coding, reverse-engineer documentation for legacy COBOL and Fortran systems and convert that code to modern languages, and to handle pull request reviews and summaries. Copilot Autofix suggests inline fixes for vulnerabilities flagged by code scanning.

Summary written by usedby from the source page, in English. The figures are those of GitHub copilot and General Motors, not ours.

> Using Copilot, developers reverse-engineered documentation for code written in older languages. Then, they leveraged it to convert this legacy code to modern languages. According to Parisi, this AI-assisted approach was a significant efficiency gain, accomplishing work that could have otherwise taken a year if done with external suppliers.

- **27 minutes**: “A critical build that once took four to six hours in the on-premises environment now completes in as little as 27 minutes on GitHub.”
- **99%**: “By unifying 99% of its source code and nearly 20,000 developers on a single platform”
- **55 languages**: “Across the organization, over 8,000 developers began using GitHub Copilot across more than 55 languages and in a wide variety of IDEs, including VS Code, Visual Studio, and the JetBrains suite.”

> Copilot Autofix has significantly reduced our remediation time. It flags a vulnerability, suggests a fix inline, and developers can just click to accept.
>
> Mario Parisi, Software Development Manager, General Motors

## What usedby checked

We compared the story with its live page on 2026-10-03.

- Checked: the figure 8,000 developers is printed word for word on the page, near the name of General Motors.
- Checked: the passage quoted above is copied word for word from the page, near the name of General Motors.
- Checked: the publication date is read from the page’s own metadata, never guessed.
- Checked: General Motors uses GitHub copilot. Confirmed line. Latest check across sources: 2026-10-05.
- Not checked: the result itself. We quote it; we did not measure it.

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Source: https://www.usedby.ai/case-studies/general-motors-github-copilot · How we check: https://www.usedby.ai/methodology