When a person has been convicted of an offense involving impaired driving, the trial judge may request a presentence investigation to determine whether the person convicted would benefit from treatment for habitual use of alcohol or drugs. If the person convicted objects, no presentence investigation may be ordered, but the judge retains his power to order suitable treatment as a condition of probation, and must do so when required by statute.
N.C. Gen. Stat. § 20-179.1