Circuit/System Verification
WARNING: This page is about a different car, the 2008 GMC Sierra, 2008 GMC Cab & Chassis Sierra, 2008 Chevrolet Silverado, and 2008 Chevrolet Cab & Chassis Silverado. However, it is still accessible from the selected car via links, so may be relevant.
IMPORTANT:
- This DTC may be stored as a history DTC without affecting the operation of the BCM. If stored only as a history DTC and not retrieved as a current DTC, do not replace the BCM or ECM.
- Using the Failure Records data may help locate an intermittent condition. If you cannot duplicate the DTC, the information in the Failure Records can help determine how many miles since the DTC set. The Fail Counter and Pass Counter can help determine how many ignition cycles that the diagnostic test reported a pass and/or a fail.
- Verify that B3794 is not set as current.
- If B3794 is set as current, refer to DTC B3794 .
- Road test the vehicle and attempt to engage cruise. Verify that cruise control engages properly and that DTC P0575 is not set.
- If the cruise control system does not operate properly and DTC P0575 is not set, refer to Cruise Control Malfunction .
- If DTC P0575 sets as current, replace the BCM. Clear the DTC and road test the vehicle and attempt to engage cruise. If DTC P0575 resets as current, replace the ECM.