P0741 is a very common trouble code. It’s know to affect the GMC Yukon quite often. Here’s what it means: P0741: Torque Converter Clutch Circuit → Performance or Stuck Off The Yukon 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
P0121 is a somewhat common trouble code with the GMC Yukon. It’s an OBDII code and has to do with the Throttle Pedal Position Sensor. It is relatively serious problem since it leaves your vehicle in failsafe mode. P0121: Throttle Pedal Position Sensor → Switch (TPS) A Circuit Range → Performance Problem OBDII code P0121 … Read more
If your GMC Yukon has the P0303 trouble code, you should know that it’s about as common of a code as there is. It’s a generic code (same meaning for all vehicles) that indicates that your vehicle’s third cylinder is misfiring. P0303 is a real drivability concern and should be dealt with right away. If … Read more
P0302 in the GMC Yukon is a common OBD II trouble code. It indicates that your vehicle’s second cylinder has a misfire. P0302 is a real drivability concern and should be dealt with right away. If it’s bad enough to cause your Yukon’s check engine light to come on, you shouldn’t drive your vehicle at … Read more
P0301 is a fairly common trouble code with the GMC Yukon. It’s an OBD2 code and indicates that your vehicle’s first cylinder is misfiring. P0301 is certainly a cause for concern and should be considered a threat to the drivability of your Yukon. Fixing P0301 should be considered a high priority. Unlike a lot of … Read more
P0300 is a generic OBDII code that can occur with the GMC Yukon. This code indicates that your vehicle’s engine is misfiring and can be a drivability threat. P0300 is often accompanied by cylinder-specific misfire codes (P030X, where the X indicates the cylinder number that is misfiring). If you have P0300 and a cylinder-specific misfire, … Read more
P0455 in the GMC Yukon is a trouble code that indicates your truck has a LARGE evaporative emissions leak. With this code, you shouldn’t notice any symptoms besides perhaps a noticeable fuel smell. P0455 usually is not an immediate threat to the driveability of your Yukon. But, whenever the check engine light is on, it’s … Read more
A prevalent issue with the GMC Yukon is the P0446 code. This code corresponds to a specific number obtained when connecting your Yukon to an OBDII scanner. A faulty vent control valve most commonly causes P0446. Definition P0446: EVAP System – Vent Control Circuit – Malfunction Symptoms Usually none Common Causes Bad EVAP Vent Control … Read more
The P0440 code is a common trouble code that many GMC Yukon owners may encounter. It indicates that there is an issue with the vehicle’s Evaporative Emission Control (EVAP) system. Specifically, the EVAP system is malfunctioning. A variety of causes can trigger the P0440 code, with the most common one being a loose or damaged … Read more
One of the most common trouble codes with the GMC Yukon is the P0496 code. This code number references a number that is given to you when you plug your Yukon into an OBDII scanner. GMC Yukon P0496 Symptoms P0496 code in the GMC Yukon will often be accompanied by an erratic idle. The engine … Read more