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:
OnStar Personal Identification
Number (PIN)
A PIN is needed to access some of
the OnStar services, like Remote
Door Unlock and Stolen Vehicle
Assistance. You will be prompted
to change the PIN the first time
when speaking with an Advi ...
Manual Transmission
If the vehicle has a manual
transmission, the shift lever is
located on the center console
between the front seats.
The following explains how to
operate the manual transmission.
CTS
CT ...
Making Turns
Notice: Making very sharp turns while trailering could cause the trailer to come
in contact with the vehicle. The vehicle could be damaged. Avoid making very sharp
turns while trailering. When tur ...