Michigan Compiled Laws, Chapter 257. Motor Vehicles § 257.1321a

Sec. 21a. (1) The administrator may order a summary suspension of a registration, certificate, or mechanic trainee permit pursuant to the administrative procedures act of 1969, Act No. 306 of the Public Acts of 1969, being sections 24.201 to 24.328 of the Michigan Compiled Laws, upon an affidavit by a person familiar with the facts set forth in the affidavit that there is a violation of 1 or more of the following:

(2) The facility or mechanic to whom the order is directed may apply to the administrator and shall be granted a hearing within 30 days of application pursuant to Act No. 306 of the Public Acts of 1969.

(3) At the hearing, the order of summary suspension shall be set aside, continued, or modified.