GM S10/S15/Sonoma Pick-Ups 1982-1993 Repair Manual

DIAGNOSTIC TROUBLE CODES

Print

Below is a listing of the Diagnostic Trouble Codes (DTCs) for the various engine control systems covered in this manual. When using these charts along with the computer module's self-diagnostic system, remember that a code only points to the faulty circuit NOT necessarily to a faulty component. Loose, damaged or corroded connections may contribute to a fault code on a circuit when the sensor or component is operating properly. Be sure that components are faulty before replacing them, especially the expensive ones.

 
label.common.footer.alt.autozoneLogo