• The 1992 Chevrolet pickup has many electrical components. Everything from the engine control module (ECM) to the basic wiring harness ensure that the Chevrolet truck operates smoothly and efficiently. One bad fuse, one faulty electrical wire or one bad sensor can cause the Chevrolet truck engine to fail or run roughly.
  
  

Engine Control Module

• The ECM is the most important electrical component in the 1992 Chevrolet pickup. The electrical component controls the timing of the truck engine, fuel usage and other electrical parameters. The ECM controls engine efficiency by reading engine speed and monitoring electrical sensors. Without the ECM in the Chevrolet truck, the engine cannot operate properly. The cost of replacing the ECM can be one of the most expensive repairs performed on the 1992 Chevrolet.
  
  

Climate Control Computer

• The climate control computer on the 1992 Chevrolet pickup operates the heating and air-conditioning (AC) units of the electrical system. This electrical component adjusts the temperature inside the cab of the Chevrolet, as well as monitors the heating coil, AC compressor and other temperature components. Once a problem develops in the climate control computer of the Chevrolet, the truck cannot control the temperature inside the cab.
  
  

Alternator

• The alternator on the engine of the 1992 Chevrolet pickup controls the voltage or power to all electrical components and accessories of the truck. While the battery is used to start the truck, the alternator provides the voltage required to operate the electrical components. The alternator also recharges the battery so the truck can be restarted.
  
  

Starter

• The starter on the 1992 Chevrolet pickup engages the engine ignition. Once the ignition key is rotated, the starter receives voltage from the battery, engaging the crank of the engine and starting the truck. The starter is a wound motor and rotor assembly that engages once voltage is sent through the starter solenoid from the battery.