LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis (Single Page) >> Electrical >> Charging Systems >> 12 V Starting And Charging System >> Diagnostic Information And Procedures >> DTC P166F: Generator Information Not Programmed Engine Control Module (ECM) >> Circuit/System Description
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Circuit/System Description

This DTC sets when the K20 Engine Control Module (ECM) has determined that the G13 Generator information is not stored in the ECM memory. The control functions for the generator are integrated in the ECM. The generator configuration programming must be done when either of the following procedures are performed: