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Home >> GMC >> 2018 >> Acadia SL >> Repair and Diagnosis >> Accessories & Equipment >> Infotainment >> Cellular, Entertainment, And Navigation System >> Diagnostic Information And Procedures >> DTC B1271: Theft Protection Active >> Circuit/System Verification

Circuit/System Verification

  1. Ignition On/Vehicle in Service Mode. Control Module ON.
  2. Verify DTC B1271 is not set in Control Module.
    • If DTC B1271 is set in Control Module 

      Replace the Control Module.

    • Go to next step: If DTC B1271 is not set in Control Module 
  3. All OK.
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