In a large skillet over medium heat, heat coconut oil for 1 minute until hot. Add roast and cook for about 1 minute on each side until browned. Place roast in slow cooker and pour remaining oil on top.
In a Vitamix blender, add peaches, vinegar, cilantro, garlic, salt, and pepper. Blend on high for about 30 to 45 seconds until mixed well and smooth.
Pour peach mixture over roast.
Cook on HIGH for 5 to 6 hours or LOW for 8 to 10 hours until roast is tender and easily shredded with a fork.