Circuit/System Verification
WARNING: This page is about a different car, the 2020 GMC Terrain and 2020 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.
- Ignition ON.
- Verify there are no DTCs set.
- If any DTCs are set
Diagnose any DTCs first. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
- Go to next step: If not DTCs are set
- If any DTCs are set
- Verify the adaptive cruise control follow distance changes between Far, Medium, and Near on the driver information center each time the adaptive cruise control gap switch is pressed.
- If the follow distance does not change
Refer to Circuit/System Testing.
- Go to next step: If the follow distance changes
- If the follow distance does not change
- Verify the scan tool Adaptive Cruise Control Disengage History Data and Adaptive Cruise Control Inhibit History Data do not indicate any consistent or recurring causes for an adaptive cruise control disable or inhibit.
- If a recurring cause is indicated
Refer to Diagnostic Aids.
- Go to next step: If a recurring cause is not indicated
- If a recurring cause is indicated
- All OK. The condition is not currently present and may be intermittent. Refer to Diagnostic Aids for instruction on how to use the scan tool to help diagnose or identify causes that may cause an adaptive cruise control malfunction.