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Home >> Buick >> 2007 >> Allure CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 56 (Immobilizer System) >> Diagnostic Information and Procedures >> DTC B3031 >> Circuit/System Verification

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Buick LaCrosse and 2008 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT: When performing a 10 Minute Relearn Procedure, all keys not learned at that time will be erased and not be recognized. Perform the Adding Keys procedure on all keys or instruct the customer how to perform the Adding Keys procedure should all vehicle keys not be present at the time of repair.
  1. Verify DTC B3055 is not set as current.
    • If DTC B3055 is set as current, refer to DTC B3055 .
  2. Perform the 10 Minute Vehicle Key Relearn procedure. Refer to Replacing Keys (North America except Canada)  or Replacing Keys (Canada) . The BCM should exit learn mode and DTC B3031 should clear.
    • If the BCM does not exit learn mode, replace the BCM.
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