1. Under CO's lemon law, when a new vehicle has been purchased with a manufacturer’s warranty and it has a defect that substantially impairs its use and market value within one year of purchase and that defect is not repaired after a “reasonable number of attempts,” the consumer may have recourse.
2. A court may order the manufacturer to replace the vehicle or refund the purchase price minus a reasonable allowance for use of the vehicle.
3. Under the law, a “reasonable number of attempts” to repair a defect applies when the same defect remains after it has been subject to repair four (4) or more times within the first year after the date of original delivery. It also applies when the vehicle is out of service for repairs for a cumulative total of thirty (30) or more business days during the warranty term or one year after original delivery, whichever comes first.
SO, AS YOU AS YOU HAVE PROOF OF EACH OF YOUR 5 VISITS TO THE DEALER RELATED TO THIS SAME TRANSMISSION ISSUE, YOU SHOULD BE COVERED AND IT MATTERS NOT THAT YOUR ONE YEAR IS ABOUT TO EXPIRE SINCE AT LEAST 4 OF THOSE VISITS HAVE ALREADY OCCURRED IN THE FIRST YEAR, if I understand what you are saying correctly.
Your next step is to send a written notice of defect by certified mail to the manufacturer. YOU must give them a chance to repair the vehicle and go through the manufacturer’s informal dispute settlement procedure, if one exists.
Starting on page 85 of this link are the CO lemon laws that apply. Notice that you have leverage here because the law states:
(3) The court shall award reasonable attorney fees to the prevailing side in any action brought to enforce the provisions of this article.
So, your best course of action here is to consult with a CO lemon law attorney because he/she can collect their fee ultimately from the dealer or the manufacturer if they win the case for you.
While we cannot refer any particular lawyer to you, here is list to help you get started. The lawyer should consult with you on this for free.