Circuit/System Verification
WARNING: This page is about a different car, the 2008 Cadillac DTS. However, it is still accessible from the selected car via links, so may be relevant.
Ignition ON, cruise on/off switch ON. With a scan tool, observe the scan tool Cruise Control Switch parameter in the BCM. While pressing each of the cruise control switches, the scan tool display should change to display the current switch being actuated. Road test the vehicle to ensure the cruise control system functions as described in Cruise Control Description and Operation (Conventional Cruise Control) or Cruise Control Description and Operation (Adaptive Cruise Control) .