Whisk the cream cheese, sour cream, milk and confectioners' sugar until smooth in a medium bowl; set aside.
Sift the flour, cocoa powder, baking soda, baking powder and 1/2 teaspoon salt into a large bowl. Beat the eggs and granulated sugar in a medium bowl until pale yellow; beat in the buttermilk, melted butter, food coloring, vanilla and vinegar. Add the egg mixture to the flour mixture and fold just until incorporated.
Heat a griddle or large nonstick skillet over medium-low heat. Lightly coat the hot skillet with melted butter. Pour 1/4-cupfuls of batter on the hot skillet, spaced evenly apart; use a spatula to spread out slightly if needed. Cook until bubbles begin to pop on the surface, about 3 minutes. Carefully flip and cook until the bottoms are set and the pancakes are cooked through, 1 to 2 minutes longer. Repeat with the remaining batter.
To serve, drizzle the cream cheese and syrup on top of the pancakes and sprinkle with pecans.
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