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:
Low-Beam Headlamps/Daytime Running Lamps (DRL), High-Beam Headlamps (Base)
1. From the back side of the headlamp assembly, remove the top cap to
replace the low-beam headlamp/DRL bulb.
2. From the back side of the headlamp assembly, remove the bottom cap to
repl ...
Driving on Grades
Reduce speed and shift to a lower gear before starting down a long or steep
downgrade. If the transmission is not shifted down, the brakes might have to be
used so much that they would get hot and n ...
Engine Compartment Overview
CTS 3.6L V6 Engine Shown, 3.0L V6 Engine Similar
A. Windshield Washer Fluid
Reservoir. See Washer Fluid.
B. Engine Compartment Fuse
Block (CTS V Wagon) or Engine
Compartment Fuse Block
(CT ...






