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Home >> GMC >> 2018 >> Terrain SL >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Instrument Panel System Displays And Gauges >> Diagnostic Information And Procedures >> DTC B124F: Universal Serial Bus (USB) Programming >> Circuit/System Description

Circuit/System Description

The control module P16 performs software checks to validate a programming event has completed successfully.No external circuit diagnosis is involved.