What does p0200 code mean on the chevy silverado?

The P0200 code in a Chevy Silverado will indicate that the engine control module (ECM) has detected a problem in the fuel injector circuit. The circuit controls these fuel injectors and tells them how much fuel to spray to combust the engine. The code will pop up when the ECM detects that the sensor performance is out of range. This could be a problem with the voltage or resistance of the circuit. The ECM will then enable a "failsafe" mode that will shut things down to prevent any further damage. Some of the problems that cause this are a failed fuel injector, short in the wiring harness, or a faulty ECM. The most likely fix is the replace the fuel injectors and check the wiring harness for any issues.