(a) Liability does not exist and a cause of action does not arise against any of the following persons for any good faith act or omission in performing the person's powers and duties under this chapter:
(1) the commissioner or the commissioner's representative;
(2) the association or the association's agent or employee;
(3) a member insurer;
(4) the board;
(5) the receiver; or
(6) a special deputy receiver or the special deputy receiver's agent or employee.
(b) The attorney general shall defend any action to which this section applies that is brought against the commissioner or the commissioner's representative, the association or the association's agent or employee, a member insurer or the insurer's agent or employee, a board member, or a special deputy receiver or the special deputy receiver's agent or employee, including an action instituted after the defendant's service with the association, commissioner, or department has terminated. This subsection does not require the attorney general to defend a person with respect to an issue other than the applicability or effect of the immunity created by Subsection (a). The attorney general is not required to defend the association or the association's agent or employee, a member insurer or the member insurer's agent or employee, a board member, or a special deputy receiver or the special deputy receiver's agent or employee against an action regarding the disposition of a claim filed with the association under this chapter or any issue other than the applicability or effect of the immunity created by Subsection (a). The association may contract with the attorney general under Chapter 771, Government Code, for legal services not covered by this subsection.