Proline auto collision centers is one of the leading auto repair facilities in the Inland Empire. Equip to serve our customers collision repair needs. We are proud to employee only the finest technicians in the industry of auto repair, who are I-CAR certified in Rancho Cucamonga. At Proline Auto Collision center we make every effort to use our expertise in writing a thorough comprehensive report of the damage. Free Rental Car For All Auto body Repairs. Free Pick and delivery on drivable vehicles. Lifetime Guarantee plus Towing Services.