OBDII trouble codes list for GM vehicles

If you own a GM vehicle, you have likely encountered OBDII (On-Board Diagnostics II) trouble codes. These codes help diagnose faults in various systems of your vehicle. In this guide we provide a complete list of OBDII trouble codes that can occur on GM vehicles. Here you will find the definition of each code to quickly identify and resolve the problem.

Our OBDII codes list for GM includes popular codes such as P0300, P0171, P0420 and many others. Learn what these codes mean and how they affect your vehicle.

Using diagnostic codes helps avoid serious breakdowns and costly repairs. Use our OBDII trouble codes guide to keep your GM vehicle in perfect condition.

If your car is equipped with OBD-II or EOBD, you can access over 9,500 generic OBD-II diagnostic trouble codes (DTCs). These codes cover various vehicle systems, including Powertrain (P0XXX, P2XXX, P34XX), Body (B0XXX), Chassis (C0XXX), and Network/Communication (U0XXX, U2XXX, U3XXX). Additionally, there are more than 15,400 manufacturer-specific OBD-II codes available for diagnosing issues unique to different car brands and models. Make sure you're equipped with the right tools to understand and resolve these trouble codes to keep your vehicle running smoothly.

By using these OBD-II codes, you can effectively diagnose issues related to engine performance, safety features, suspension, and more.

All these codes in one application for you iPhone/iPad, Android or Microsoft Windows device. Always with you. No internet connection needed.

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OBDII trouble codes list for GM vehicles

Powertrain · P0xxx / P2xxx / P3xxx7 390

Network & communication · Uxxx1 556

Body · Bxxx3 781

Chassis · Cxxx1 309

Manufacturer · P1xxx518