R&M Diesel Services is a premier auto repair shop in Coal City, IL, serving Grundy County and the surrounding areas. Founded in 2023, we specialize in diesel engine repair with expertise in auto diagnostics, brakes, differentials, electrical diagnostics, engine repair, and more. Our services also include heavy-duty computer diagnostics, light and medium diesel truck repair, fleet maintenance, and 24/7 emergency roadside assistance. Count on us for top-notch auto care, mobile repairs, trailer maintenance, and on-site services to keep your vehicles running smoothly. When you need reliable and efficient automotive solutions, trust R&M Diesel Services to always deliver quality workmanship and exceptional customer service.