Tuneup Masters is located at 1001 W Arrow Hwy, Glendora, CA. This location is in the Covina-Valley neighborhood. This business specializes in Auto Repair & Service. Tuneup Masters is open Mon, 9am-8pm; Tue, 9am-8pm; Wed, 9am-8pm; Thu, 9am-8pm; Fri, 9am-8pm; Sat, 9am-6pm; Sun, Closed and accepts All Major Credit Cards, Cash, Mastercard and Visa.