Michigan Compiled Laws, Chapter 691. Judiciary § 691.1504

Sec. 4. (1) Subject to subsection (2), an individual who having no duty to do so in good faith voluntarily renders cardiopulmonary resuscitation to another individual is not liable in a civil action for damages resulting from an act or omission in rendering the cardiopulmonary resuscitation, except an act or omission that constitutes gross negligence or willful and wanton misconduct.

(2) Subsection (1) applies only to a civil action that is filed or pending on or after May 1, 1986.

(3) Subject to subsection (5), an individual who having no duty to do so in good faith voluntarily renders emergency services to another individual using an automated external defibrillator is not liable in a civil action for damages resulting from an act or omission in rendering the emergency services using the automated external defibrillator, except an act or omission that constitutes gross negligence or willful and wanton misconduct.

(4) Subject to subsection (5), the following persons are not liable in a civil action for damages resulting from an act or omission of an individual rendering emergency services using an automated external defibrillator as described in subsection (3), except if the person's actions constitute gross negligence or willful and wanton misconduct:

(5) Subsections (3) and (4) apply only to a civil action that is filed or pending on or after the effective date of the amendatory act that added this subsection.  1