It shouldn't.
You can purchase a freightliner truck near Mesquite, TX at Dallas freightliner. They have a huge selection.
Need to know the exact model in order to answer this. Freightliner manufactures several different types of trucks.
Yes, you are in luck. You can buy all the essentail products that you will need for your Freightliner truck. The following websites has all the products that you will need: http://www.freightlinertrucks.com/parts-service/parts/overview.aspx.
Need to know what engine you have in order to answer this. In 2003, Freightliner had the option of Detroit, Cummins, Caterpillar, and Mercedes-Benz diesel engines.
Need to know the bed dimensions in order to answer this. Freightliner doesn't manufacture the dump bodies - aftermarket companies do.
Need to know the transmission model in order to answer this.
If you are speaking about the Freightliner commercial trucks you will need a Commercial Drivers License. The type of CDL will depend on the gross vehicle weight and what it will be used to haul. Most Freightliner drivers need the Class A license and to get that you will need to take a driving test and a knowledge test. You may have to take additional tests depending on what the truck is being used for..
Need to know the exact model and configuration in order to answer this. A 26k GVW box truck and a 33K dump truck aren't going to have the same tare weight.
www.freightlinertrucks.com is the site where you can search the required information easily. No matter what you do, Freightliner has the truck you need.
You really don't need it. You just need to identify which harness goes from the ECM to the jake brake.
IIRC, the door panel on a Columbia is all snapped in (as pretty much the entire interior of a typical Freightliner fleet truck after the FLD120 is)... you just need a door trim puller to go around the panel, and pull it out, or even a simple slotted screwdriver should work.