Utah Code Title 80. Utah Juvenile Code § 80-6-306. Plea--Withdrawal of a plea

(a) a denial of the alleged offense;

(b) an admission of the alleged offense; or

(c) with the consent of the juvenile court, a plea of no contest as described in Section 77-13-2.

(2)(a) If a minor enters an admission under Subsection (1), the juvenile court may:

(b) If the minor successfully completes the conditions imposed under Subsection (2)(a)(ii), the juvenile court shall dismiss the petition filed under this chapter.

(c) If the minor fails to complete the conditions imposed under Subsection (2)(a)(ii), the juvenile court shall:

(a) a lesser included offense;

(b) an offense of a lesser degree; or

(c) a different offense for which the juvenile court may enter after amending the petition.

(a) leave of the court; and

(b) a showing that the admission or plea was not knowingly and voluntarily made.

(9)(a) Even if the juvenile court has ordered a disposition under Part 7, Adjudication and Disposition, a minor shall make a request to withdraw an admission, or a plea of no contest, within 30 days after the day on which the minor entered the admission or plea.

(b) If the juvenile court has not entered a disposition, the juvenile court may not announce a disposition until the motion to withdraw under Subsection (9)(a) is denied.