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Home >> GMC >> 2000 >> Yukon Denali >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 1 (Anti-Theft System) >> Diagnostic Tests >> DTC B3031: Controller In Learn Mode >> Circuit Description

Circuit Description

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This DTC sets when ignition is active and Passlock(tm) key code has not been learned by BCM. Vehicle will start and SECURITY indicator light will be on.