Service Bay/On Road Idle Learn Procedure - Performed after the ECM is programmed or replaced

WARNING: This page is about a different variant/trim than selected.

Engine idling for 3 m.
NOTE: Do NOT perform this procedure if any DTCs are set. Refer to Diagnostic Trouble Code (DTC) List - Vehicle .
The ECM will start to learn the new idle cells and the scan tool Desired Idle Speed should start to decrease.
Ignition OFF for 60 s.
Start and idle the engine for 3 m.
Verify the engine is idling normally.
- If the engine idle is not correct
1. Operate the vehicle at speeds above 70 km/h (44 mph) with several decelerations and extended idles.
  NOTE: During the drive cycle the check engine light may come on with idle speed DTCs. If idle speed codes are set, clear codes so the ECM can continue to learn.
2. Verify the engine is idling normally.
  - If the engine idle is not correct.
    Ignition OFF for 60 s, repeat step 5.1.
  - If the engine idle is correct.
3. Clear any DTCs and return to the diagnostic that referred you here.
- If the engine idle is correct
Clear any DTCs and return to the diagnostic that referred you here.