Engine Coolant Heater
The engine heater can provide easier starting and better fuel economy during engine warm-up in cold weather conditions at or below −18°C (0°F). Vehicles with an engine heater should be plugged in at least four hours before starting.
An internal thermostat in the plug-end of the cord may exist which will prevent engine coolant heater operation at temperatures above −18°C (0°F).
If the vehicle has a diesel engine, see the Duramax Diesel supplement for more information.
See also:
Event Data Recorders
This vehicle has an Event Data Recorder (EDR). The main purpose of an EDR is to record, in certain crash or near crash-like situations, such as an airbag deployment or hitting a road obstacle, data th ...
Entry Lighting
The dome lamp, cargo lamp, and foot lamp inside the vehicle come on when any
door is opened, if the dome lamp is in the door position. In addition, these lamps
come on when the Remote Keyless Entr ...
Service Vehicle Messages
SERVICE A/C (Air Conditioning) SYSTEM
This message displays when the electronic sensors that control the air conditioning and heating systems are no longer working.
Have the climate control system s ...