What are the codes to a Chevy silverado 4x4 1500 1992 check engine light?

The check engine light on a Chevy Silverado 4x4 1500 1992 can be triggered by various trouble codes. Here are some of the common codes and their meanings:

- Code 12: Throttle Position Sensor (TPS) voltage too low or high.

- Code 13: Oxygen sensor signal voltage too low or high.

- Code 14: Fuel injector circuit malfunction.

- Code 15: Coolant temperature sensor signal voltage too low or high.

- Code 16: Vehicle speed sensor signal voltage too low or high.

- Code 17: System lean, indicating a lean fuel mixture.

- Code 18: System rich, indicating a rich fuel mixture.

- Code 21: IAC (Idle Air Control) valve circuit malfunction.

- Code 22: MAP (Manifold Absolute Pressure) sensor signal voltage too low or high.

- Code 23: Air Intake Temperature (IAT) sensor signal voltage too low or high.

- Code 24: Knock sensor signal voltage too low or high.

- Code 32: EGR valve (Exhaust Gas Recirculation) circuit malfunction.

- Code 33: EVAP (Evaporative Emission Control System) canister purge solenoid circuit malfunction.

- Code 34: Oxygen sensor heater circuit malfunction.

These are just a few examples of the various check engine light codes that may be displayed on your Chevy Silverado. If you see the check engine light illuminated, it's recommended to have your vehicle diagnosed by a qualified mechanic as soon as possible to identify and address the underlying issue.