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 is not available in states adopting California Emissions Standards, the vehicle will operate satisfactorily on fuels meeting federal specifications, but emission control system performance might be affected. The malfunction indicator lamp could turn on and the vehicle might fail a smog—check test.
See Malfunction Indicator Lamp. If this occurs, return to your authorized dealer for diagnosis.
If it is determined that the condition is caused by the type of fuel used, repairs might not be covered by the vehicle warranty.
See also:
Powertrains
Direct injection technology helps the Cadillac CTS offer more power while
maintaining fuel economy and lowering emissions. It delivers fuel more precisely
to increase the efficiency of combustion. ...
Coverage
Services are provided up to 5 years/ 160 000 km (100,000 mi), whichever comes
first.
In the U.S., anyone driving the vehicle is covered. In Canada, a person driving
the vehicle without permission ...
Underbody Maintenance
Use plain water to flush dirt and debris from the vehicle's underbody. Your dealer
or an underbody car washing system can do this. If not removed, rust and corrosion
can develop. ...






