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Welcome to the GM Trouble Codes and Check Engine Light codes page. Below you will find the most complete list of GM trouble codes available. The code definitions are a good starting point when determining the cause of the service engine light but where do you go from there?
There may be slight changes depending on the year/model of vehicle, you would need to consult a factory service manual for specifics. GM cars and light trucks use SAE J1850 VPW (Variable Pulse Width Modulation).
21 mar 2024 · Do you have a GM vehicle between 1980 to 1995? If so, there is a big chance your car has an OBD1 connector (ALDL). This connector is unique and applies to Pontiac, Chevrolet, GMC, Oldsmobile, Cadillac, and Buick, and more.
Diagnostic trouble codes may be cleared by disconnecting the battery ground cable for at least 20 seconds. Reconnect negative battery cable and recheck codes to confirm the repair.
Are you finding the meaning of your 90s GM’s “Check Engine” light issues? Decode the secrets with our GM OBD1 codes list. Click to learn more!
Free Download: Full GM OBD2 Trouble Codes List and Meaning PDF. 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 codes you need for engine, network, body control, and chassis issues.
GM OBD Trouble Codes. Note: See this page for generic OBD-II codes (they start with P0XXX). See also: Chevy Check Engine Light @ Check-Engine-Light.com and Chevrolet OBD-II Codes section. Introduction. GM cars and light trucks use SAE J1850 VPW (Variable Pulse Width Modulation).
