Chilton DIY was founded in 1904 in West Philadelphia, known for its picturesque row houses. Chilton soon became a trusted publisher of periodicals, especially for automotive repair. The company expanded well beyond the automotive industry, providing periodicals, conferences, and market research services to a wide variety of industries. The 20 most popular Chilton DIY coupons & Chilton DIY promo codes for December 2017. Make use of Chilton DIY coupon codes & sales to get extra savings when shop at chiltondiy.com.