When it comes to proper diagnosis and high-quality auto repair, Norco and surrounding communities look no further than JG Auto Service. As a family-owned and operated business, we treat each of our customers like family, offering honest maintenance advice and always giving wallet-friendly options for repair. When it comes to proper diagnosis and high-quality auto repair, Norco and surrounding communities look no further than JG Auto Service. As a family-owned and operated business, we treat each of our customers like family, offering honest maintenance advice and always giving wallet-friendly options for repair.