The submitted parts markup or labor rate shall go into effect 45 days after the warrantor's receipt of its submission, unless, within that period, the warrantor reasonably substantiates that the submission is materially incomplete, materially inaccurate, or is materially unreasonable and provides a full explanation of any reasons that the submitted markup or rate is materially incomplete, materially inaccurate, or materially unreasonable, evidence validating each reason, a copy of all calculations used by it demonstrating any material inaccuracy, and a proposed adjusted markup or rate provided that the dealer's submission is materially accurate based upon the qualified repair orders submitted by the dealer. In that event, the warrantor may submit only one rebuttal to the dealer, and may not thereafter add to, expand, supplement, or otherwise modify any element thereof, including, but not limited to, its grounds for contesting the parts markup or labor rate, unless the warrantor did not possess the information at the time of its rebuttal, or if the information is used for the purpose of rebutting the dealer's response to the warrantor's rebuttal.
Ala. Code § 8-20-7 (1975)