General Motors, the largest producer of cars in Mexico, won’t provide details on how it would react if President Trump imposes 25 percent tariffs from the two countries.

Trump’s promised 25% tariffs on imports from Canada and Mexico are set to take effect Saturday, pushing automakers to adjust production plans.

General Motors manufactured 22.3% of light vehicles in Mexico: it is the main automotive producer in the Mexican market

For months, automakers have been taking a “wait-and-see” approach to the Trump administration’s potential tariffs.

If U.S. President Donald Trump follows through on his pledge to slap 25% tariffs on imports from Mexico it could usher in a volatile new chapter in the longstanding trade relationship with the impacts hitting consumers.

Around 90% of auto exports from both Mexico and Canada go to the U.S., according to the Mexican Automotive Manufacturers' Association (AMIA) and the Canadian Vehicle Manufacturers' Association. German automakers,

Trump has said he is considering imposing 25% tariffs on both countries by 1 February. He has previously tied the tariffs threat to ending illegal migration and drugs crossing into the US through its southern and northern borders.