Rainbow Northshore Buick GMC is your premier Buick and GMC dealer in Covington, LA. Serving New Orleans Buick and New Orleans GMC customers, Rainbow Northshore Buick GMC has a large selection of new and certified pre-owned Buick and GMC cars and SUVs. We offer excellent financing opportunities to all our New Orleans Buick, Metairie and Covington Buick and Covington GMC customers.