Drivability Problems Do you have this feeling that something's just not right with your car, especially with the way it is running? It may be a good time for drivability diagnostics. Drivability refers to anything having do with how your vehicle is performing while on the road. From the fuel system to affected components and other systems like the Powertrain, ignition, distributor, exhaust system, brakes, tires, suspension etc... the list is endless. With the proper diagnostics, the problems are zeroed in on and solved before they become a major issue. One of the main areas this type off testing looks at is the powertrain Control Module (PCM). It is the Engines control System, the on onboard computer in every vehicle that acts as the brain of the engine. A PCM or circuit system failure can be the cause of many problems in your car including the transmission. If the vehicle undergoes a drivability diagnostics test, problems will be sorted out within the Powertrain's operation ... Read more »