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, commonly referred to as spark knock, might be heard when driving.
If this occurs, use a gasoline rated at 87 octane or higher as soon as possible. If heavy knocking is heard when using gasoline rated at 87 octane or higher, the engine needs service.
See also:
Safety
The CTS sedan performed well in crash tests conducted by the Insurance
Institute for Highway Safety and the National Highway Traffic Safety
Administration. It received the IIHS' 2012 Top Safety Pi ...
Vehicle Care
To help keep the vehicle looking
like new, vehicle care products
are available from your dealer.
For information on how to clean and
protect the vehicle’s interior and
exterior, see Interior ...
Cruise Control Messages
APPLY BRAKE BEFORE CRUISE
If this message displays when attempting to activate cruise control, apply
the brake pedal and try again.
CRUISE SET TO XXX
This message displays when the cruise co ...