House committee substitute to the 1st edition makes the following changes. 

Amends GS 20-279.21(d1) further by requiring that for a claim for property damage to a motor vehicle against an insurer the policy must provide that if the difference in the claimant's and insurer's estimate of the diminution in fair market value is greater than $500 (was, $20,000 or 25%) of the fair market retail value of the vehicle before the accident as determined by the latest edition of the National Automobile Dealers Association Pricing Guide Book (removes the option of using another publication approved by the Commissioner of Insurance), then on written demand, the claimant and insurer must each select a competent and disinterested appraiser and notify the other of the selection within 20 days. Requires that the appraiser exchange appraisals within 15 days. Refusal by an appraiser to appraise the loss or exchange an appraisal with an opposing appraiser subjects the appraiser to civil penalties. Provides that an umpire's report (was, an agreement between either of the appraisers and the umpire) is binding on both the claimant and the insurer.

Changes the effective date of the act from when it becomes law to October 1, 2019.