The manufacturer or dealer shall provide to the purchaser each time the purchaser's vehicle is returned from being serviced or repaired a fully itemized statement indicating all work performed on said vehicle including, but not limited to, parts and labor. It shall be the duty of a dealer to notify the manufacturer of the existence of a nonconformity within seven days of the delivery by a purchaser of a vehicle subject to a nonconformity when it is delivered to the same dealer for the second time for repair of the same nonconformity. The notification shall be by certified mail, return receipt requested.
73 P.S. § 1957