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Home >> Buick >> 2019 >> Envision Base >> Repair and Diagnosis >> External Pages >> Different car >> Section 20 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC B3976 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2018 Buick Envision. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify the engine starts with each available key.
    • If the engine does not start with a key 

      Replace the key.

    • Go to next step: If the engine starts with all keys 
  2. All OK.
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