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:

Battery Power Protection
This feature shuts off the dome and reading lamps, if they are left on for more than 10 minutes after the ignition is turned off. The cargo lamp shuts off after 20 minutes. This prevents the battery f ...

Off-Road Recovery
The vehicle's right wheels can drop off the edge of a road onto the shoulder while driving. Follow these tips: 1. Ease off the accelerator and then, if there is nothing in the way, steer the ...

Hydraulic Power Steering (3.0L V6 Engine)
If power steering assist is lost due to a system malfunction, the vehicle can be steered, but may require increased effort. ...