The OBD-II DTC codes here generally apply to all OBD-II GM vehicles from 1996 and newer: GMC, Chevrolet, Buick, Cadillac, and former brands Oldsmobile, Pontiac, and Saturn.

For OBD information for all GM vehicles please see our GM OBD / OBD2 page. If you cannot find your model below and it is newer than 1996, please refer to our list of all GMC OBD2 codes.

Uncover the meanings behind your GMC's diagnostics with our comprehensive GMC trouble codes list. Resolve engine issues with ease today!

Unlock the secrets of your GMC's performance with our extensive GMC trouble codes list guide, and get your vehicle running smoothly again.

Mar 13, 2025 · Understanding the specific fault codes for GMC vehicles is crucial for effective diagnosis and repair. Here’s a comprehensive list of some common GMC manufacturer …

This list applies to GM’s cars, including Chevy, Cadillac, Buick, and GMC. Moreover, we divide it into four parts: Powertrain, Network, Body, and Chassis, which helps you quickly find the …

GMC Check Engine Light Codes Welcome to the GMC Check Engine Light codes page. Below you will find the most complete list of GMC trouble codes available. The code definitions are a …

Description, diagnostic and repair information for GMC OBD2-OBDII engine codes | Page 1 | Engine-Codes.com

Oct 24, 2024 · Solve the mystery of your GMC's "check engine" light by unlocking the secrets of its OBD-II codes, but be prepared to uncover a complex web of issues.

U3508 GMC Control Module Input Power ‘C’ Circuit Range/Performance Read More →