WASHINGTON (AP) - A Toyota spokesman says the automaker is confident that replacing gas pedals on 3.8 million U.S. vehicles will fix a sudden acceleration problem.

Irv Miller says company investigators found that pedals becoming stuck in the floor mat is the major issue. Miller says there's no reason to believe there's a problem with electronic control systems.

As a temporary step, Toyota will have dealers shorten the length of gas pedals beginning in January. New pedals should be ready in April, and some vehicles will have brake override systems installed as a precaution.

The massive recall, announced in September, includes the popular Toyota Camry and Prius. The Camry is the top-selling passenger car in America, while the Prius is the best-selling gas-electric hybrid.