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:
Rear Safety Belt Comfort Guides
This vehicle may have rear shoulder belt comfort guides. If not, they are available
through your dealer. The guides may provide added safety belt comfort for older
children who have outgrown boost ...
General Information
For service and parts needs, visit your dealer. You will receive genuine GM parts
and GM-trained and supported service people. Genuine GM parts have one of these
marks:
...
How to Inspect the Engine Air Cleaner/Filter
To inspect the air cleaner/filter, remove the filter from the vehicle and lightly
shake the filter to release loose dust and dirt. If the filter remains covered with
dirt, a new filter is required ...