GMC Acadia P1682: Ignition 1 Switch → Circuit 2

  P1682 is a diagnostic trouble code that indicates that your GMC Acadia’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 GMC Acadia P1682: Ignition 1 Switch → Circuit 2

GMC Acadia Radiator Leaking:  Symptoms + Diagnosis

  Your GMC Acadia’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 GMC Acadia Radiator Leaking:  Symptoms + Diagnosis

GMC Acadia 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 GMC Acadia 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 GMC Acadia P0520: Oil Pressure Switch/Sensor → Circuit

GMC Acadia P0108:  MAP Barometric Sensor → High Input 

  P0108 is a generic OBD-II trouble code.  It indicates your GMC Acadia’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 GMC Acadia P0108:  MAP Barometric Sensor → High Input 

GMC Acadia 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 GMC Acadia as it would for any other vehicle.  If your Acadia 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 GMC Acadia P0443: EVAP System Purge Control Valve Circuit – Malfunction