Warning Lights, Gauges, and Indicators
Warning lights and gauges can signal that something is wrong before it becomes serious enough to cause an expensive repair or replacement. Paying attention to the warning lights and gauges could prevent injury.
Some warning lights come on briefly when the engine is started to indicate they are working. When one of the warning lights comes on and stays on while driving,
or when one of the gauges shows there may be a problem, check the section that explains what to do. Waiting to do repairs can be costly and even dangerous.
Base Cluster English Shown, Metric Similar
0 111
Driver Information Center (DIC) (Midlevel and Uplevel) 0 124
Midlevel Cluster English Shown, Metric Similar
0 111
Driver Information Center (DIC) (Midlevel and Uplevel) 0 124
Uplevel Cluster English Standard Shown, Metric Similar
Use the right steering wheel control to open and scroll through the different items and displays.
Press S or T to access the cluster applications. Use the thumbwheel to scroll
through the list of available features. Press the thumbwheel to select. Not all
0 111
Level) 0 122 or
Driver Information Center (DIC) (Midlevel and Uplevel) 0 124
There is an interactive display area in the center of the instrument cluster.
applications will be available on all vehicles.
Home
Information displayed here can be customized from the Options menu.
Speedometer : Displays how fast the vehicle is moving in either kilometers per hour (km/h) or miles per hour (mph).
Speed Sign : Shows sign information, which comes from a roadway database in the onboard navigation, if equipped.
Time : Displays the current time.
Fuel Range : Displays the approximate distance the vehicle can be driven without refueling. The fuel range estimate is based on an average of the vehicle’s fuel economy over recent driving history and the amount
of fuel remaining in the fuel tank. Fuel range cannot be reset.
Audio
In the Audio menu, use the thumbwheel to scroll through options, browse for music, select from favorites, or change the audio source. In the main view, scroll to change the station or go to the next or previous track.
Navigation
In the Navigation menu, if there is no active route, a compass will be displayed. If there is an active route, press the thumbwheel to cancel or resume route guidance, mute or unmute voice guidance, or access Recents or Favorites.
Phone
In the Phone menu, if there is no active phone call, view recent calls, scroll through contacts, select from the favorites, or change the phone source. If there is an active call, mute the phone or switch to handset operation.
Options
Use the thumbwheel to scroll through items in the Options menu.
Head-up Display (HUD) : If equipped, this feature allows for adjusting the angle of the HUD image and changing or turning off the Speed Limit Sign.
HUD Rotation: Press the thumbwheel while Adjust Rotation is highlighted to enter Adjust Mode. Scroll to adjust the angle of the HUD display. Press the thumbwheel to confirm and save the setting. This feature may only be available in P (Park).
Speed Limit Style: Press the thumbwheel while Speed Limit Style is highlighted to change the speed sign style or to turn it off.
Units : Press the thumbwheel while Units is displayed to enter the Units menu. Choose US or metric units by pressing the thumbwheel while the desired item is highlighted. A selected mark will be displayed next to the selected item.
Info Page Options : Press the thumbwheel while Info Page Options is displayed to enter and select the items to be displayed in the Info app. A selected mark will be displayed next to the selected item.
Home : Press the thumbwheel to select the available elements to display. Not all elements will be available on all vehicles: Speedometer, Speed Sign, Time, and Fuel Range.
Display (Uplevel) : Press the thumbwheel to enter the Display menu. Select to turn on or off the compass or speed sign.
Speed Warning : The Speed Warning display allows the driver to set a speed that they do not want to exceed. To set the Speed Warning, press the thumbwheel when Speed Warning is displayed, or press the thumbwheel on the main view to set the
speed value. Scroll to adjust the value. Press the thumbwheel to set the speed. Once the speed is set, this feature can be turned off by pressing the thumbwheel while viewing this page. If the selected speed limit is exceeded, a pop-up warning is displayed with a chime.
Software Information : Press the thumbwheel while Software Information is highlighted to display open source software information.
The speedometer shows the vehicle's speed in either kilometers per hour (km/h) or miles per hour (mph).
The odometer shows how far the vehicle has been driven, in either kilometers or miles.
The trip odometer shows how far the vehicle has been driven since the trip odometer was last reset.
The trip odometer is accessed and reset through the Driver Information Center (DIC). See Driver Information Center (DIC) (Base Level) 0 122 or
Driver Information Center (DIC) (Midlevel and Uplevel) 0 124.
The tachometer displays the engine speed in revolutions per minute (rpm).
For vehicles with the Stop/Start system, when the ignition is on, the tachometer indicates the vehicle status. When pointing to AUTO STOP, the engine is off but the vehicle is on and can move. The engine could auto start at any time. When the indicator points to OFF, the vehicle is off.
When the engine is on, the tachometer will indicate the engine’s revolutions per minute (rpm). The tachometer may vary by several hundred rpm’s, during Auto Stop mode, when the engine is shutting off and restarting.
Metric Uplevel Shown, Midlevel and Base Level Similar
English Uplevel Shown, Midlevel and Base Level Similar
When the ignition is on, the fuel gauge indicates about how much fuel is left in the tank.
There is an arrow near the fuel gauge pointing to the side of the vehicle the fuel door is on.
When the indicator nears empty, the low fuel light comes on. There still is a little fuel left, but the vehicle should be refueled soon.
Here are three things that some owners ask about. None of these show a problem with the fuel gauge:
Uplevel Metric Shown, Base Level and Midlevel Similar
Uplevel English Shown, Base Level and Midlevel Similar
The engine oil pressure gauge shows the engine oil pressure in kPa (kilopascals)
or psi (pounds per square inch) when the engine is running.
Oil pressure can vary with engine speed, outside temperature, coolant temperature, and oil viscosity.
On some models, the oil pump will vary engine oil pressure according to engine needs. Oil pressure may change quickly as the engine speed or load varies. This is normal. If the oil pressure warning light or Driver Information Center (DIC) message
indicates oil pressure outside the normal operating range, check the vehicle's oil as soon as possible.
See Engine Oil 0 328.
If the vehicle has a diesel engine, see the Duramax diesel supplement.
Metric Uplevel Shown, Midlevel and Base Level Similar
English Uplevel Shown, Midlevel and Base Level Similar
This gauge measures the temperature of the vehicle's engine coolant.
While driving under normal operating conditions, if the needle moves into the red warning area, the engine is too hot. Pull off the road, stop the vehicle, and turn off the engine as soon as possible.
Uplevel Shown, Base Level and Midlevel Similar
When the ignition is on, this gauge indicates the battery voltage.
When the engine is running, this gauge shows the condition of the charging system. The gauge can transition from a higher to lower or a lower to higher reading. This is normal. If the vehicle is operating outside the normal operating range, the charging system light comes on. See Charging System Light 0 114. The voltmeter gauge may also read lower when in fuel economy mode.
This is normal.
Readings outside the normal operating range can also occur when a large number of electrical accessories are operating in the vehicle and the engine is left idling for an extended period. This condition is normal since the charging system is not able to provide full power at engine idle. As engine speeds are increased, this condition should correct itself as higher engine speeds allow the charging system to create maximum power.
The vehicle can only be driven for a short time with the readings outside the normal operating range. If the vehicle must be driven, turn off all accessories, such as the radio and air conditioner.
Readings outside the normal operating range indicate a possible problem in the electrical system. Have the vehicle serviced as soon as possible.
There is a driver seat belt reminder light on the instrument cluster.
When the vehicle is started, this light flashes and a chime may come on to remind the driver to fasten their seat belt.
Then the light stays on solid until the belt is buckled. This cycle may continue several times if the driver remains or becomes unbuckled while the vehicle is moving.
If the driver seat belt is buckled, neither the light nor the chime comes on.
The vehicle may have a front passenger seat belt reminder light near the passenger airbag status indicator. See Passenger Sensing System 0 65.
When the vehicle is started, this light flashes and a chime may come on to remind passengers to fasten their seat belt.
Then the light stays on solid until the belt is buckled. This cycle continues several times if the front passenger remains or becomes unbuckled while the vehicle is moving.
If the front passenger seat belt is buckled, neither the chime nor the light comes on.
The front passenger seat belt reminder light and chime may come on if an object is put on the seat such as a briefcase, handbag, grocery bag, laptop, or other electronic device. To turn off the reminder light and/or chime, remove the object from the seat or buckle the seat belt.
This light shows if there is an electrical problem with the airbag system. The system check includes the airbag sensor(s), the passenger sensing system, the pretensioners, the airbag modules, the wiring, and the crash sensing and diagnostic module. For more information on the airbag system, see Airbag System 0 60.
The airbag readiness light comes on for several seconds when the vehicle is started. If the light does not come on then, have it fixed immediately.
If there is a problem with the airbag system, a Driver Information Center (DIC) message may also come on.
The vehicle has a passenger sensing system. See Passenger Sensing System 0 65 for important safety information. The overhead console has a passenger airbag status indicator.
United States
Canada
When the vehicle is started, the passenger airbag status indicator will light ON and OFF, or the symbols for on and off, for several seconds as a system check. Then, after several more seconds, the status indicator
will light either ON or OFF, or either the on or off symbol, to let you know the status of the front outboard passenger frontal airbag.
If the word ON or the on symbol is lit on the passenger airbag status indicator, it means that the front outboard passenger frontal airbag is allowed to inflate.
If the word OFF or the off symbol is lit on the passenger airbag status indicator, it means that the passenger sensing system has turned off the front outboard passenger frontal airbag.
If, after several seconds, both status indicator lights remain on, or if there are no lights at all, there may be a problem with the lights or the passenger sensing system. See your dealer for service.
The charging system light comes on briefly when the ignition is turned on, but the engine is not running, as a check to show the light is working. It should go out when the engine is started.
If the light stays on, or comes on while driving, there may be a problem with the electrical charging system. Have it checked by your dealer. Driving while this light is on could drain the battery.
When this light comes on, or is flashing, the Driver Information Center (DIC) also displays a message.
If a short distance must be driven with the light on, be sure to turn off all accessories, such as the radio and air conditioner.
This light is part of the vehicle’s emission control on-board diagnostic system. If this light is on while the engine is running, a malfunction has been detected and the
vehicle may require service. The light should come on to show that it is working when the ignition is on and the engine is not running. See Ignition Positions (Keyless Access) 0 229 or
Ignition Positions (Key Access) 0 228.
Malfunctions are often indicated by the system before any problem is noticeable. Being aware of the light and seeking service promptly when it comes on may prevent damage.
If the light is flashing : A malfunction has been detected that could damage the emission control system and increase vehicle emissions. Diagnosis and service may be required.
To help prevent damage, reduce vehicle speed and avoid hard accelerations and uphill grades. If towing a trailer, reduce the amount of cargo being hauled as soon as possible.
If the light continues to flash, find a safe place to park. Turn the vehicle off and wait at least 10 seconds before restarting the engine. If the light is still flashing, follow the previous guidelines and see your dealer for service as soon as possible.
If the light is on steady : A malfunction has been detected. Diagnosis and service may be required.
Check the following:
0 284 or Filling the Tank (Chassis Cab Model) 0 285. The diagnostic system can detect if the adapter has been left installed in the vehicle, allowing fuel to evaporate into the atmosphere. A few driving trips with the adapter removed may turn off the light.
Recommended Fuel (6.2L V8 Engine)
0 282.
If the light remains on, see your dealer.
If the vehicle requires an Emissions Inspection/Maintenance test, the test equipment will likely connect to the vehicle's Data Link Connector (DLC).
The DLC is under the instrument panel to the left of the steering wheel. Connecting devices that are not used to perform an Emissions Inspection/Maintenance test or to
service the vehicle may affect vehicle operation. See Add-On Electrical Equipment 0 316. See your dealer if assistance is needed.
The vehicle may not pass inspection if:
several days of routine driving before the system is ready for inspection. This can happen if the 12-volt battery has recently been replaced or run down, or if the vehicle has been recently serviced.
See your dealer if the vehicle will not pass or cannot be made ready for the test.
Metric English
This light should come on briefly when the vehicle is turned on. If it does not come on then, have it fixed so it will be ready to warn you if there is a problem.
If the light comes on and stays on at start up, there is a brake problem. Have the brake system inspected right away.
If the light comes on while driving, pull off the road and stop carefully. If equipped with electric brake boost, vehicle speed may be limited when the brake system warning light comes on. The brake pedal might be harder to push, or the brake pedal may go closer to the floor. It could take longer to stop. If the light is still on, have the vehicle towed for service. See Towing the Vehicle
0 392.
Metric English
This light comes on when the parking brake is applied. If the light continues flashing after the parking brake is released, or while driving, there is a problem with the Electric Parking Brake system. A message may also display in the Driver Information
Center (DIC).
If the light does not come on, or remains flashing, see your dealer.
This light should come on briefly when starting the vehicle. If it does not come on, have it fixed so it will be ready to warn if there is a problem.
If this light stays on, take the vehicle to your dealer as soon as possible. See the information for the Electric Parking Brake under Electric Parking Brake 0 245.
A message may also display in the Driver Information Center (DIC).
This warning light should come on briefly when the vehicle is turned on. If the light does not come on, have it fixed so it will be ready to warn if there is a problem.
If the light comes on while driving, safely stop as soon as it is possible and turn off the vehicle. Then turn on the vehicle again to reset the system.
If the ABS warning light stays on, or comes on again while driving, the vehicle needs service. A chime may also sound when the light stays on.
If the ABS warning light is the only light on, the vehicle has regular brakes, but ABS is not functioning.
If both the ABS warning light and the brake system warning light are on, ABS is not functioning and there is a problem with the regular brakes. See your dealer for service.
See Brake System Warning Light 0 116.
Auto Mode Shown, Other Modes Similar
If equipped, the four-wheel-drive light displays what mode the vehicle is in. The light will show each mode: 2WD, 4HI, AUTO (all transfer cases); 4LOW and N (two-speed transfer case only).
The light will flash when a shift is in progress. Once the shift is complete the light will be steady.
If the light turns amber, there may be a malfunction with the four-wheel-drive system. See your dealer.
See Four-Wheel Drive 0 241.
For vehicles with the Tow/Haul Mode feature, this light comes on when the Tow/ Haul Mode has been activated.
See Tow/Haul Mode 0 240.
If equipped, the Hill Descent Control light comes on when the system is ready for use. When the light flashes, the system is active.
See Hill Descent Control (HDC) 0 249.
After the vehicle is started, this light turns off and stays off if LKA has not been turned on or is unavailable.
If equipped, this light is white if LKA is turned on, but not ready to assist. This light is green if LKA is turned on and is ready to assist.
LKA may assist by gently turning the steering wheel if the vehicle approaches a detected lane marking. The LKA light is amber when assisting.
This light flashes amber as a Lane Departure Warning (LDW) alert, to indicate that the lane marking has been crossed.
LKA will not assist or alert if the turn signal is active in the direction of lane departure, or if LKA detects that you are accelerating, braking, or actively steering.
See Lane Keep Assist (LKA) 0 280.
If equipped, this indicator will display green when a vehicle is detected ahead and amber when you are following a vehicle ahead much too closely.
See Forward Collision Alert (FCA) System
0 273.
If equipped, this indicator will display amber when a nearby pedestrian is detected in front of the vehicle.
See Front Pedestrian Braking (FPB) System
0 276.
This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer. If the system is working normally, the indicator light then turns off.
The traction off light comes on when the Traction Control System (TCS) has been turned off by pressing and releasing the TCS/ESC button.
This light and the Electronic Stability Control (ESC) OFF light come on when ESC is
turned off.
If the TCS is off, wheel spin is not limited. Adjust driving accordingly.
See Traction Control/Electronic Stability Control 0 247.
If equipped, the Electronic Stability Control (ESC) or TCS indicator/warning light comes on briefly when the engine is started.
If the light does not come on, have the vehicle serviced by your dealer. If the system is working normally, the indicator light turns off.
If the light is on and not flashing, the TCS, and potentially the ESC system have been disabled.
If the indicator/warning light is on and flashing, the TCS and/or the ESC system is actively working.
See Traction Control/Electronic Stability Control 0 247.
This light will flash when Trailer Sway Control is active. See Trailer Sway Control (TSC) 0 304.
This light comes on briefly while starting the engine. If it does not, have the vehicle serviced by your dealer.
This light comes on when the ESC system is turned off. If ESC is off, the Traction Control System (TCS) is also off.
If the ESC and TCS are off, the system does not assist in controlling the vehicle. Turn on the TCS and the ESC systems and the warning light turns off.
See Traction Control/Electronic Stability Control 0 247.
This light comes on briefly while starting the vehicle.
If it does not, have the vehicle serviced by your dealer. If the system is working normally the indicator light goes off.
The engine coolant temperature warning light comes on when the engine has overheated.
If this happens, pull over and turn off the engine as soon as possible. See Engine Overheating 0 336.
This light comes on when Sport Mode is selected.
This light comes on when Snow/Ice Mode is selected.
This light comes on when Terrain Mode is selected.
This light comes on when Off-Road Mode is selected.
For vehicles with the Tire Pressure Monitor System (TPMS), this light comes on briefly when the engine is started. It provides information about tire pressures and
the TPMS.
When the Light Is On Steady
This indicates that one or more of the tires are significantly underinflated.
A Driver Information Center (DIC) tire pressure message may also display. Stop as soon as possible, and inflate the tires to the pressure value shown on the Tire and Loading Information label. See Tire Pressure 0 365.
When the Light Flashes First and Then Is On Steady
If the light flashes for about a minute and then stays on, there may be a problem with the TPMS. If the problem is not corrected, the light will come on at every ignition cycle. See Tire Pressure Monitor Operation
0 366.
This light should come on briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer.
If the light comes on and stays on, it means that oil is not flowing through the engine properly. The vehicle could be low on oil and might have some other system problem. See your dealer.
This light is near the fuel gauge and comes on briefly when the ignition is turned on as a check to show it is working.
It also comes on when the fuel tank is low on fuel. The light turns off when fuel is added. If it does not, have the vehicle serviced.
The security light should come on briefly as the engine is started. If it does not come on, have the vehicle serviced by your dealer.
If the system is working normally, the indicator light turns off.
If the light stays on and the engine does not start, there could be a problem with the theft-deterrent system. See Immobilizer Operation 0 32.
This light comes on when the high-beam headlamps are in use. See Headlamp High/ Low-Beam Changer 0 140.
This light comes on when the IntelliBeam system, if equipped, is enabled. See Exterior Lamp Controls 0 138.
For vehicles with fog lamps, this light comes on when the fog lamps are on.
The light goes out when the fog lamps are turned off. See Fog Lamps 0 142.
This light comes on when the exterior lamps are in use, except when only the Daytime Running Lamps (DRL) are active. See Exterior Lamp Controls 0 138.
The cruise control light is white when the cruise control is on and ready, and turns green when the cruise control is set and active.
See Cruise Control 0 253.
If equipped, this light is white when the Adaptive Cruise Control (ACC) is on and ready, and turns green when the ACC is set and active. When ACC is engaged and the driver accelerates, the indicator will turn blue. See Adaptive Cruise Control (Camera) 0 255.
This light comes on when a door is open or not securely latched. Before driving, check that all doors are properly closed.
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