General motors hit hard by Trump's Mexico threat Unlisted Video

General Motors tumbled almost 5% early Friday after President Trump announced a round of tariffs on Mexico. The automaker produces almost 30% of its North America production in Mexico, according to an analyst estimate. Watch General Motors trade live. GM, which is the US automaker with the largest share of production sourced from Mexico, fell 5%. IHS, RBC Capital Markets Importantly, GM produces some of its iconic full-size pick-ups in Mexico, according to Spak.