Gasoline Specifications (U.S. and Canada Only)
At a minimum, gasoline should meet ASTM specification D 4814 in the United States or CAN/CGSB—3.5 or 3.511 in Canada. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See Fuel Additives for additional information.
See also:
Using Voice Commands
During a Planned Route
Cancel Route
1. Push . System responds:
“OnStar ready,” then a tone.
Say “Cancel route.” System
responds: “Would you like to
cancel route directions to your
destination?”.
2. Say “Yes.” Syst ...
Vehicle Messages
Messages displayed on the DIC
indicate the status of the vehicle or
some action that may be needed
to correct a condition. Multiple
messages may appear one after
another.
The messages that ...
Automatic Transmission Shift Lock Control Function Check
WARNING
When you are doing this inspection, the vehicle could move suddenly. If the
vehicle moves, you or others could be injured.
1. Before starting this check, be sure there is enough room aro ...