In 1998 General Motors and Isuzu formed DMAX, a joint venture to produce diesel engines. GM raised its stake in Isuzu to 49% the following year, effectively gaining control of the company, and quickly followed this up by appointing an American GM executive to head Isuzu's North American Operations. This marked the first time a non-Japanese executive had held such a high position at Isuzu. In 2001 GM and Isuzu announced plans to share distribution networks and for Chevrolet to market an Isuzu product.