P0575
DTC P0575
Circuit Description
When a cruise control function switch is activated, the body control module (BCM) detects a predetermined voltage signal. The BCM sends a GMLAN serial data message to the engine control module (ECM) indicating the function that has been requested.
DTC Descriptor
This diagnostic procedure supports the following DTC:
DTC P0575 Cruise Control Switch Signal Circuit
Conditions for Running the DTC
The engine is ON.
Conditions for Setting the DTC
* The ECM receives an invalid cruise control switch status GMLAN serial data message from the BCM.
* This diagnostic runs continuously.
Action Taken When the DTC Sets
* The Cruise Control System is disabled.
* The ECM stores the DTC information into memory when the diagnostic runs and fails.
* The malfunction indicator lamp (MIL) will not illuminate.
* The ECM records the operating conditions at the time the diagnostic fails. The ECM stores this information in the Failure Records.
* All cruise control function switches are set to OFF.
Conditions for Clearing the DTC
* A last test failed, or the current DTC, clears when the diagnostic runs and does not fail.
* A history DTC clears after 40 consecutive warm-up cycles, if failures are not reported by this or any other emission related diagnostic.
* Use the scan tool in order to clear the DTC.
Diagnostic Aids
* 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.
* If this DTC is retrieved as both a current and history DTC, replace the BCM.
Test
