Trouble CodesGM OBD Trouble CodesGM Code 46

CODE 46- VATS System Fault

The ECM receives a signal from the Pass-Key module. When the correct signal is received, the ECM will allow the engine to start and run. Please review the RepairPal article on the GM Pass-Key Anti-theft systems for more information.


  • Engine may not start

Common Causes

  • Faulty ignition lock cylinder

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Chevy Trouble Codes