Tenn. Code Ann. § 55-10-420

(1) Effective July 1, 2003, the offense of adult driving while impaired is repealed.

(2) Nothing in the repeal of the offense of adult driving while impaired shall be construed to prohibit or prevent the use of any conviction for the offense occurring prior to July 1, 2003, for any of the purposes set out in § 55-10-405, § 55-10-406, § 55-10-409, § 55-10-411(b)(2), § 55-10-603(2)(A)(x) or § 55-50-502(c)(3)(B)(ii).