General Motors Co (GM.N) will re-enter the U.S. medium-duty truck market next year with Chevrolet-branded vehicles supplied by Japanese truck maker Isuzu Motors Ltd , people familiar with the matter said on Monday. Isuzu’s shares rose after a Wall Street Journal report on the deal. The long-time partners have in the past jointly developed trucks such as the Chevy Colorado pickup, sold as the i-Series by Isuzu.