Check out which companies are making headlines before the bell:
General Motors–The auto giant reported first quarter profit of 29 cents per share, two cents above estimates, with revenue falling short of consensus. Excluding items, the company earned six cents per share, down sharply from a year ago. GM's profits were impacted by recall costs, but strong pricing helped support the bottom line.
3M–The company reported quarterly profit of $1.79 per share, a cent below estimates, with revenue also shy of consensus. That notwithstanding, the company called the quarter "solid" and maintained its full-year forecast.
Caterpillar–The heavy equipment maker beat estimates by a mile with quarterly profit of $1.44 per share. Excluding restructuring costs, the company earned $1.61 per share, with sales also exceeding analyst predictions. Cost cuts helped Caterpillar increase its profits even as it deals with a continuing slowdown in its mining equipment business.
Verizon–Verizon fell three cents shy of estimates with quarterly profit of 84 cents per share, excluding certain items, though revenue was slightly above forecasts.