Gasoline Specifications
At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB-3.5 in Canada. Some gasolines may contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). General Motors recommends against the use of gasolines containing MMT.
See also:
Engine Overheating
You will find a coolant temperature gage on your
vehicle’s instrument panel.
If your vehicle has a Driver Information Center
(DIC), the display will show an Engine Coolant
Hot/Engine Overheated ...
Automatic Crash Response
In a crash, built in sensors can automatically alert an
OnStar advisor who is immediately connected to
the vehicle to see if you need help. ...
Hood
To open the hood:
1. Pull the interior hood release
handle located to the left of the
steering column below the
instrument panel.
2. Go to the front of the vehicle and
push the secondary ...