This GM manufacturer-specific code indicates an issue with the ignition/misfire system. Code P1371 requires GM diagnostic procedures and may need dealer-level tools for complete diagnosis.
Find certified mechanics near you who can diagnose and repair P1371.
For informational purposes only. Diagnostic trouble codes are starting points for diagnosis, not definitive answers. Always consult a certified mechanic for proper diagnosis and repair. Estimated costs vary by vehicle, location, and shop rates.