GMC Terrain P0171: Causes, Diagnosis, + How to Fix

One of the most common trouble codes with the GMC Terrain is P0171. It indicates that your GMC Terrain is running lean on the bank one side.  It’s the most common air/fuel mixture-related code. It’s not the most complicated OBDII trouble code to diagnose. It is also one of the most common codes. The most … Read more

GMC Terrain P0325 Code: Causes + How to Fix

Having trouble with your GMC Terrain’s P0325 trouble code? You’re not alone. This code can be caused by a variety of issues, but fortunately, there are several ways to identify and fix the problem. In this article, we’ll explore the causes of the P0325 code and how to fix it. The knock sensor’s primary role … Read more

GMC Terrain P0507 Code: Meaning, Causes, How to Fix

P0507 is a fairly typical OBDII trouble code that can occur in the GMC Terrain. It is typically triggered when the engine idle speed is 200 rpm or more over the predetermined limit set by the GMC It is a generic code, which means that it has the same meaning for the GMC Terrain as any other vehicle. … Read more

GMC Terrain: VSS – Circuit Malfunction

  P0500 is a OBDII trouble code that affects the GMC Terrain‘s Vehicle Speed Sensor (VSS). The VSS sends a signal to the engine’s computer letting it know how fast that the vehicle is going. The Terrain uses this signal for many vehicle functions. It helps control transmission shifts, ABS, cruise control, the speedometer, and … Read more

GMC Terrain P0306: Misfire Detected (Cylinder 6)

P0306 is a fairly common trouble code with the GMC Terrain. It’s and OBD2 code and stands for: P0306 is certainly a cause for concern, and should be considered a threat to the drivability your Terrain. The nice thing about P0306 is that it’s a cylinder specific trouble code, which makes diagnosing the problems much … Read more

GMC Terrain P0021: OBDII Code Diagnosis

P0021 is a common trouble code. It affects vehicles with variable valve timing (VVT). The list of VVT vehicles is growing, and the GMC Terrain can have VVT, and is prone to developing this code.     P0021 is a generic OBDII code. This means that it has the same definition regardless of the make … Read more

GMC Terrain P0010: Causes + Likely Fix

P0010 is a relatively common trouble code. It affects vehicles with variable valve timing (VVT). The list of VVT vehicles is growing, and the GMC Terrain can have VVT and is prone to developing this code. P0010 is often by low or sludgy oil. Check your Terrain’s oil as soon as possible. P0010 is a … Read more