This page is meant to help you troubleshoot the GMC Yukon P0420 trouble code. It covers the P0420 code’s meaning, symptoms, causes, and possible solutions. P0420 is the most common OBDII code and is virtually never a breakdown risk. A failing oxygen sensor or bad catalytic converter are the most common causes of P0420. Table … Read more
A trouble code is a signal that is generated by an automatic transmission system whenever it detects an issue in the GMC Yukon that requires your attention. The P0700 code is a general code that is typically accompanied by another code that specifies the specific problem. This code is part of the OBDII system and … Read more
P0171 and P0174 both indicate that there is a lean condition present in your GMC Yukon. By themselves, these are some of the most common OBD2 codes. When they are together, it indicates that the entire engine is running lean. Definition Both of these codes are generic, which means they have the same meaning … Read more
One of the most common trouble codes with the GMC Yukon is the P0442 code. This code number references a number that is given to you when you plug your truck into a OBDII scanner. GMC Yukon P0442 Code Symptoms The P0442 code on a GMC Yukon will often be thrown after the engine has … Read more