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:
Up-Shift Light
The vehicle may have an up-shift
light. It indicates when to shift to
the next higher gear for best fuel
economy.
See Manual Transmission for more information.
For the CTS-V, the tracer ligh ...
Connecting and Controlling a USB Drive
The infotainment system can only play back .mp3 and .wma files from a USB
drive.
Only the first 10,000 songs are recognized on the device.
When a device is not supported, the message “No suppor ...
Sun Visors
Pull the sun visor down to block glare. Detach the sun visor from the center
mount to pivot to the side window, or to extend along the rod, if available. ...