The No. 1 U.S. carmaker has begun hiring software engineers under a plan to create 1,500 IT jobs at its new Warren, Mich.-based software development center. General Motors (GM) said the action was part of its previously announced move to take info tech work in-house, which could cut costs and boost quality, rather than outsourcing it. GM outsources 90% of IT work now. Shares fell 0.9% to 24.57.