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More than just a list of Chevy Check Engine Light Codes! Our resources can help you fix your check engine light now! Informative articles, technician advice, component tests, wiring help and more!
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. 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 ...
OBDII Chevrolet Code Definitions. Be sure to double check the codes. Anything P1000 to P1999 or P3000 to P3400 will be Manufacturer specific and may not match the ones listed here.
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.
Accessing GM OBD1 Trouble Codes. Turn ignition switch to OFF position. Locate Data Link Connector (DLC), see image below. Jumper the A&B terminals (a paper clip or a jumper wire work ok) Turn Ignition switch to ON position. Count the flashes on the “ CHECK ENGINE ” or “ SERVICE ENGINE ” light. FLASH, pause, FLASH, FLASH = code 12.
With the ignition switch off, jumper the A & B terminals on the DLC connector. Turn the ignition switch on (but do not start engine) while watching the "Service Engine Soon" light on the dash. Each code will be represented by the SES light flashing, pausing, and flashing.
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).
