Chevy Silverado P1682: Ignition 1 Switch → Circuit 2

  P1682 is a diagnostic trouble code that indicates that your Chevy Silverado’s ignition switch is having a voltage problem.  It is typically caused by a faulty ignition switch, although there can be other causes as well. There are two “circuits” to the ignition switch.  The first one goes to the ECM through the throttle … Read more Chevy Silverado P1682: Ignition 1 Switch → Circuit 2

Chevy Silverado Radiator Leaking:  Symptoms + Diagnosis

  Your Chevy Silverado’s cooling system passes antifreeze throughout its engine.  The main parts of the system are the thermostat, radiator, water pump, coolant itself, and the hoses.  If any of these parts go bad, you may experience radiator a leak.  A radiator leak is very common.  You should notice the leak directly under your … Read more Chevy Silverado Radiator Leaking:  Symptoms + Diagnosis

Chevy Silverado: P0720 → OSS Circuit → Malfunction

P0720 is a generic OBD II trouble code, which means that it has the same meaning for your Chevy Silverado as it would any other vehicle.  It indicates that your Silverado’s OSS (Output Shaft Speed Sensor) is reporting a malfunction. It’s typically caused by a bad OSS, or a wiring problem. The OSS works by … Read more Chevy Silverado: P0720 → OSS Circuit → Malfunction

Chevy Silverado P0520: Oil Pressure Switch/Sensor → Circuit

  P0520 is a common OBD2 trouble code.  It’s generic, which means that it has the same meaning for the Chevy Silverado as it would any other vehicle.  P0520 indicates that the oil pressure sensor is operating outside of its normal “range”.  It is typically caused by a bad oil pressure sensor switch or a … Read more Chevy Silverado P0520: Oil Pressure Switch/Sensor → Circuit

Chevy Silverado P0108:  MAP Barometric Sensor → High Input 

  P0108 is a generic OBD-II trouble code.  It indicates your Chevy Silverado’s MAP (manifold absolute pressure) sensor’s voltage reading is outside of the normal operating range.  The voltage is too high.  It’s most commonly caused by a bad MAP sensor, wiring issue, or vacuum leak. The MAP sensor measures the air pressure coming into … Read more Chevy Silverado P0108:  MAP Barometric Sensor → High Input 

Chevy Silverado P0443: EVAP System Purge Control Valve Circuit – Malfunction

P0443 is a very common OBD2 code.  It’s generic, which means that it has the same meaning for the Chevy Silverado as it would for any other vehicle.  If your Silverado has this code, it is indicating the EVAP purge control valve circuit is malfunctioning..  This is typically caused by a short in the wiring … Read more Chevy Silverado P0443: EVAP System Purge Control Valve Circuit – Malfunction

Chevy Silverado P0521: Oil Pressure Sensor Switch → Performance/Range

P0521 is an OBD2 diagnostic code that is triggered when your Chevy Silverado detects that the value being sent from the oil pressure sensor is out of its normal operating range. It is typically caused by a bad oil pressure sensor or an issue with the oil system, and should be diagnosed and fixed right … Read more Chevy Silverado P0521: Oil Pressure Sensor Switch → Performance/Range