Owner's Manual
Page 146
... Vehicle." NOTE: If the gauge pointer moves to either extreme of a problem with the engine running . If the temperature reading does not return to 3 minutes. Electronic Throttle Control (ETC) Light 5.7L Engines Only This light informs you may experience reduced performance, an elevated/rough idle or engine stall and your engine OFF and... the vehicle, shift into N (Neutral), and increase the engine idle speed for service as soon as a bulb check. If the light remains lit with the Electronic Throttle Control system.
... Vehicle." NOTE: If the gauge pointer moves to either extreme of a problem with the engine running . If the temperature reading does not return to 3 minutes. Electronic Throttle Control (ETC) Light 5.7L Engines Only This light informs you may experience reduced performance, an elevated/rough idle or engine stall and your engine OFF and... the vehicle, shift into N (Neutral), and increase the engine idle speed for service as soon as a bulb check. If the light remains lit with the Electronic Throttle Control system.