(a) Subject to Subsection (b), the commissioner, on a showing of good cause, may by rule:
(1) extend any deadline established under this subchapter; and
(2) set the length of the extension.
(b) With reference to deadlines applicable to the association only, all deadline extensions related to claims arising from an occurrence may not exceed 120 days in the aggregate. This subsection does not affect the extension of a deadline applicable to a claimant or to both the association and a claimant.

(c) For the purposes of Subsection (a), “good cause” includes military deployment.
(d) The commissioner shall adopt rules as necessary to implement this section. § 2001.0045, Government Code, does not apply to rules adopted under this section.