General Motors will be sending letters to more than 944,000 owners worldwide, 857,735 of which are located in the U.S., due to voluntary recall that affects 16 cars and SUVs from 2006 to 2008. The huge recall involves vehicles fitted with a heated washer fluid system that could short circuit causing other electrical features to malfunction and lead to smoke or even fire. According to GM spokesman Tom Wilkinson, up until now, there have been three reported fires related to the problem. GM said that its dealers will install a wire harness with an in-line fuse free of charge. See the affected models after the jump. -Continued