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Circuit/System Verification

WARNING: This page is about a different car, the 2012 Buick Verano. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC B3445 or B3878 is not set.
  2. Verify that DTC P0571 is not set.
    • If DTC is set, replace the K20 ECM. Clear the DTC and road test the vehicle. If DTC resets, replace the K9 BCM.
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