Truck Trailer Parts, Service and Repair. You depend on your delivery vehicle every day, so when your truck trailer door isn't working, you need fast, dependable service. With a large selection of Todco, Whiting and other door parts in stock, our professional service technicians can quickly get your door running again, so you can get your vehicle back on the road, where it belongs. We know providing on-time installation, regular maintenance and having the right part when you need it is critical to your business. We'll go the extra mile to earn your trust and business. Contact American Door Works today for a free consultation about your truck trailer door needs.