GMC Sierra P0420: Meaning, Causes, + How to Fix

This page is meant to help you troubleshoot the GMC Sierra 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

GMC Sierra P0700 Code

One of the most common problems with the GMC Sierra is when it throws the P0700 trouble code. A trouble code is a code thrown out by an automatic transmission whenever it detects that there is an issue going on. In the case of the P0700, it is a general code. This means that it … Read more

P0442 Code GMC Sierra

One of the most common trouble codes with the GMC Sierra 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 Sierra P0442 Symptoms The P0442 code on a GMC Sierra will often be thrown after the engine has a … Read more