Engines of heavy equipment and trucks are monitored and controlled by a computer called the Electronic Control Module (ECM) or Electronic Control Unit (ECU). Basically it's these computers that make it possible for trucks and heavy equipment to perform their tasks. It serves as the command center.
The ECM or ECU is comprised of hardware and software. In order for it to work, it must be programmed to the specifications of an engine. Engines from different manufacturers are seldom alike since sometimes they use different technology which means a cummins ecm would be different from a a Cat ecm. The fuel used in a for example a truck also influence ecm programming. The ecm of diesel engine would be different of the ecm of as gasoline powered engine.
With the importance of ecm in heavy equipment and trucks expected to perform a variety of tasks, it's not a good idea to take it for granted. If you are trucking business operator that transports heavy load long distances, you need a properly programmed and reliable truck ecm. Otherwise, you may find yourself stranded in an isolated area because your ecm malfunctioned. A can give you incorrect information, fail to warn you that is something is wrong with your truck or worse cause your engine not to start.
Fortunately for you, there are many companies involved in ecm reprograming. Some of them sell new units or build a new one for you from scratch. So if you find yourself stranded somewhere in the Grand Prairie or Fort Worth area, you should not have problem getting help. It is important however that you find the best. It would be a waste of time and money costly to have your ecm repaired by somebody who cannot do a decent job.
First you need to consider is the company's specialization. If it happens that your truck is powered by a cummins engine, getting a cummins ecm specialist is a no brainer. There could be several of them, but if youm come across Detroit ecm in your search then you may not go further. This company has been engaged in ecm programming and reprograming ecms for many types of engines. All it needs is information of your tire size and engine serial number. It offers warranty for its ecms.