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Home >> GMC >> 2018 >> Terrain Denali, FWD >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information And Procedures >> DTC P1649: Immobilizer Security Code Not Programmed >> Repair Instructions
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Repair Instructions

Perform the Diagnostic Repair Verification after completing the repair.

Control Module References for engine control module replacement, programming, and setup.

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