Fuel

For diesel engine vehicles, see “Fuel for Diesel Engines” in the Duramax Diesel Supplement.

For Vehicles with gasoline engines, please read this.

See also:

Engine Cover
A. Oil Fill Cap B. Engine Cover To remove: 1. Remove the oil fill cap (A). 2. Raise the engine cover (B) to release it from the retainers. 3. Lift and remove the engine cover. 4. Reverse Steps ...

Engine Coolant Temperature Gauge
Metric English This gauge shows the engine coolant temperature. It also provides an indicator of how hard the vehicle is working. During a majority of the operation, the gauge reads 100°C (210 ...

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. ...