Except as provided in Sections 1793.01 and 1793.02, nothing in this chapter shall affect the right of the manufacturer, distributor, or retailer to make express warranties with respect to consumer goods. However, a manufacturer, distributor, or retailer, in transacting a sale in which express warranties are given, may not limit, modify, or disclaim the implied warranties guaranteed by this chapter to the sale of consumer goods.
Ca. Civ. Code § 1793