Chevrolet Sonic Owner's Manual: Gasoline Specifications
At a minimum, gasoline should meet ASTM specification D 4814. Some gasolines contain an octane-enhancing additive called methylcyclopentadienyl manganese tricarbonyl (MMT). We recommend against the use of gasolines containing MMT. See “Prohibited Fuels" in Recommended Fuel.
Recommended Fuel
Use regular unleaded gasoline with a posted octane rating of 87 or higher. If
the octane rating is less than 87, an audible knocking noise may be heard. If this
occurs, use a gasoline rated at 87 ...
California Fuel Requirements
If the vehicle is certified to meet California Emissions Standards, it is designed
to operate on fuels that meet California specifications. See the underhood emission
control label. If this fuel i ...
Other materials:
Front Seats
The front seats have adjustable head restraints in the outboard seating positions.
Adjust the head restraint so that the top of the restraint is at the same height
as the top of the occupant's head. This position reduces the chances of a neck injury
in a crash.
The height of the head r ...
Floor Carpet Drying
If the carpet or the pad or insulator is wet, use the following criteria for
drying or for replacing the components:
For a 1-piece carpet assembly bonded to a cotton or a fiber padding, replace
the entire assembly.
For a 2-piece carpet assembly with a cotton or a fiber padding, replace ...
Drive Range, Fifth Gear Default (Gen 1)
If the transmission encounters an electrical component malfunction, the transmission
will default to Fifth gear. All solenoids will default to their normal state. If
the torque converter clutch is applied, it will release. The transmission will remain
in Drive Range?Fifth Gear Default until th ...
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