In a large mixing bowl stir together the green cabbage, red cabbage, jicama, yellow pepper, green pepper, and raisins.
For dressing, stir together the sour cream, mayonnaise, jalapeno pepper, sugar, cumin, salt, and pepper. Pour dressing over cabbage mixture; toss to coat. Cover and chill for 1 to 24 hours. Gently stir chopped avocado into coleslaw. Makes 6 servings.