Fuel System Messages
FUEL LEVEL LOW
This message displays and a chime sounds if the fuel level is low. Refuel as soon as possible. See Fuel Gauge and Fuel for more information.
TIGHTEN GAS CAP
This message may display along with the check engine light on the instrument panel cluster if the fuel cap is not tightened properly. See Malfunction Indicator Lamp . Reinstall the fuel cap fully. See Filling the Tank . The diagnostic system can determine if the fuel cap has been left off or improperly installed. A loose or missing fuel cap allows fuel to evaporate into the atmosphere. A few driving trips with the cap properly installed should turn this light and message off.
See also:
Setting Cruise Control
If the cruise button is on when not in use, it could get bumped and go into cruise
when not desired. Keep the cruise control switch off when cruise is not being used.
The cruise control light on th ...
Diagnostics
OnStar Vehicle Diagnostics will perform a vehicle check every month. It will
check the engine, transmission, antilock brakes, and major vehicle systems.
It also checks the tire pressures, if the v ...
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 ...