Special Application Services
• Severe Commercial Use Vehicles Only: Lubricate chassis components every 5 000 km/3,000 mi.
• Have underbody flushing service performed once a year.
See also:
To Use The Engine Coolant Heater
1. Turn off the engine.
2. Open the hood and unwrap the electrical cord.
The electrical cord is located on the passenger side of the engine compartment,
in front of the air cleaner.
3. Plug it in ...
Filling the Tank
If the vehicle has a diesel engine, see the Duramax diesel supplement for more information.
WARNING
Fuel vapor burns violently and a fuel fire can cause bad injuries.
To help avoid injuries to you ...
Range Selection Mode
Range Selection Mode
The Range Selection Mode switch, if equipped, is located on the shift lever.
To enable the Range Selection feature:
1. Move the column shift lever to the M(Manual) position ...