An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to www.epa.gov. This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Vehicle and Engine Certification

General Motors (GM) Compliance Materials for Light-Duty Greenhouse Gas (GHG) Standards

You may need Free Viewers and Adobe Reader to view files on this page.

This page provides GM compliance materials for Light-Duty GHG standards.

Requests for Off-Cycle GHG Credits