FixVault

Circuit/System Verification

WARNING: This page is about a different car, the 2008 Buick Lucerne. However, it is still accessible from the selected car via links, so may be relevant.
  1. Verify that DTC B3794 is not set as current.
    • If the DTC is set as current, refer to DTC B3794 .
  2. Road test the vehicle and attempt to engage cruise. Verify the cruise control engages properly and that DTC P0575 is not set.
    • If DTC P0575 sets as current, replace the BCM. Clear the DTC, road test the vehicle and attempt to engage cruise. If DTC P0575 resets as current, replace the ECM.