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:
Hands-Free Calling
1. Push System responds: “OnStar
ready.”
2. Say “Dial.” System responds: “Please say the name or number to call.”
3. Say the entire number without pausing, including a “1” and the ...
Safety System Check
Now and then, check that the safety belt reminder light, safety belts, buckles, latch plates, retractors, and anchorages are all working properly.
Look for any other loose or damaged safety belt syst ...
Armrest Storage
Vehicles with a rear seat armrest have two cupholders. Pull the armrest down from the rear seatback to access the cupholders. ...