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:
Universal Remote System Operation
Using the Universal Remote System
Press and hold the appropriate Universal Remote system button for at least
half of a second.
The indicator light will come on while the signal is being transmi ...
Diagnostics
OnStar Vehicle Diagnostics will
perform a vehicle check every
month. It will check the engine,
transmission, antilock brakes, and
major vehicle systems. It also
checks the tire pressures, if ...
Headlamp Washer
For vehicles with headlamp washers
they clear debris from the headlamp
lenses.
The headlamp washers are beneath
the headlamps.
Press the washer button at the end
of the windshield wiper le ...






