P0141 is a very common OBDII code that occurs in the GMC Sierra. It is caused by a failure in one of the elements that heat the oxygen sensors, specifically bank 1 sensor 2, which is downstream from the catalytic converter. It technically stands for: The purpose of the heated element in the oxygen sensor … Read more
P0011 is a common (and serious) OBD II diagnostic trouble code that can occur in the GMC Sierra. It indicates an issue with your truck’s Variable Valve Timing (VVT) system. The first thing you should do when you have this code is check your Sierra’s oil. If the oil level is too low, the camshaft … Read more
P0113 is an OBDII trouble code that occurs when the GMC Sierra’s engine management computer detects that there is an issue with the Intake Air Temperature (IAT) Sensor, specifically that there is a High Input Problem with it. P0113: IAT Sensor → High Input Problem The IAT sensor is responsible for measuring the air temperature … Read more
P0441 is one of the more common OBD II codes that can occur in the GMC Sierra. It is frequently caused by a loose or bad gas cap, cracked or disconnected EVAP system hoses, vacuum leaks, or a bad purge valve. Always start by taking a look at the gas cap. P0441 is related to … Read more
P0305 is a fairly common trouble code with the GMC Sierra. It’s and OBD2 code and stands for: P0305: Misfire Detected → Cylinder 5 P0305 is certainly a cause for concern, and should be considered a threat to the drivability your Sierra. The nice thing about P0305 is that it’s a cylinder specific trouble code, … Read more
P0401 is a very common OBDII trouble code that’ll pop up in the GMC Sierra. It has to do with the emissions system and stands for Exhaust Gas Recirculation (EGR)→ Insufficient Flow. The EGR system in your truck is responsible for recirculating exhaust gasses in order to lower the vehicle’s emissions output. There are three … Read more
P0135 is a very common OBDII code that occurs in the GMC Sierra. It is caused by a failure in one of the oxygen sensors heated elements, specifically bank 1 sensor 1. It technically stands for: P0135: Heated Oxygen Sensor → Sensor Heater Circuit Malfunction → Bank 1, Sensor 1 The purpose of the heated … Read more
This page is meant to help you troubleshoot the GMC Sierra P0430 trouble code. It covers the P0430 code’s meaning, symptoms, causes, and possible solutions. P0430 is an emissions-related trouble code and is virtually never a breakdown risk. P0430 is usually caused by a catalytic converter issue or a bad O2 sensor. Table of Contents … Read more
If your GMC Sierra has the P0304 trouble code, you should know that it’s about as common of a code as there is. It’s a generic OBD IIcode (same meaning for all vehicles) that indicates that your truck’s fourth cylinder is misfiring. P0304 is a drivability concern and should be dealt with right away. If … Read more
P0741 is a very common trouble code. It’s know to affect the GMC Sierra quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The Sierra uses a clutch in the torque converter to lock the engine and transmission together at highway speed. P0741 can register whenever this connection … Read more