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:

Ignition Transmission Lock Check
While parked, and with the parking brake set, try to turn the ignition to LOCK/OFF in each shift lever position. • The ignition should turn to LOCK/OFF only when the shift lever is in P (Park). ...

Loading the Vehicle for Off-Road Driving
WARNING ○ Unsecured cargo on the load floor can be tossed about when driving over rough terrain. You or your passengers can be struck by flying objects. Secure the cargo properly. ○ ...

Returning the Seat to the Seating Position
To return the second row seat to its normal seating position: 1. Remove objects on the floor behind the second row seat or in the seat tracks on the floor. 2. Pull the seatback rearward until it is ...