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Home >> GMC >> 2020 >> Terrain SL >> Repair and Diagnosis >> Body & Frame >> Ignition Switch/Steering Lock >> Immobilizer System >> Diagnostic Information and Procedures >> DTC P1649 >> Reference Information

Reference Information

Schematic Reference

Immobilizer Schematics 

Connector End View Reference

Master Electrical Component List

Description and Operation

Immobilizer Description and Operation 

Electrical Information Reference

Scan Tool Reference

Control Module References