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Home >> GMC >> 2017 >> Acadia SL >> Repair and Diagnosis >> External Pages >> Different car >> Section 133 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC B3978-B3982: Incorrect Environmental Identifier Received From Module >> Circuit/System Verification
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Circuit/System Verification

WARNING: This page is about a different car, the 2016 Cadillac ATS. However, it is still accessible from the selected car via links, so may be relevant.
  1. Perform the Programming and Setup procedure for the control module that set the DTC.
  2. Verify the DTC does not set after programming.
    • If the DTC sets after programming 

      Replace the control module that set the DTC.

    • If the DTC does not set after programming 
  3. All OK.
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