2023 GMC Sierra Denali 3500 HD Warning and Indicator Lights

The warning and indicator lights on the 2023 GMC Sierra Denali 3500 HD are an important way for the car and its driver to talk to each other. This is an example of a sophisticated and thorough way to watch a car. Placed in a smart way across the dashboard, these lights show a lot of important data, including safety alerts like when the airbags go off, when the tire pressure needs to be checked, and what the state of the anti-lock brake system is. They are very important for keeping the car healthy because they show problems with the engine, fluid levels, and service needs. This keeps drivers informed and gives them the tools they need to make smart choices on the road. The Sierra Denali 3500 HD’s warning and indicator lights not only put safety first, but they also make driving more enjoyable by using a visual language that boosts confidence and peace of mind. They also show that the vehicle is dedicated to both usefulness and safety.

Instrument Cluster

The instrument cluster displays a preview of information including electric range, charging, odometer, and battery status when the driver door is opened, before starting the vehicle. This preview dismisses after starting the vehicle or soon after closing the driver door.

English Cluster Lunar Display Shown, Others and Metric Similar

1. Driver Information Center (DIC)
2. Power Indicator Gauge
3. Speedometer
4. Battery Gauge (High Voltage)

Reconfigurable Instrument Cluster

The instrument cluster layout can be changed. There are five display configurations to choose from: Lunar, Clean, Sport, Off-Road, and Digital. Use the steering wheel control to move between the different display zones and scroll through the different displays. See “Display Layout” under “Options.”
Lunar configuration displays the speedometer, battery gauge, and power indicator gauge in the center of the display. There are two DIC areas on the left and right of the display.

Clean configuration is a simplified display that has the speedometer on the top center. The battery gauge is located below the speedometer. There is one DIC area to the far right of the display.
Sport configuration displays the speedometer in the center of the display. The battery gauge is located below the speedometer and the power indicator gauge is above it. There are two DIC areas on the left and right of the display.

• Off-road configuration displays the speedometer in the top center. The battery gauge is located on the bottom left side of the display and the power indicator gauge is on the bottom right side. There are three DIC areas in the left, right, and center of the display.
• Digital configuration displays the speedometer in the center of the display. The battery gauge is located on the far left of the display and the power indicator gauge is on the far right. There are two DIC areas to the left and right of the speedometer.

Acceleration Mode (Watts to Freedom)

While in Acceleration Mode, the speedometer will appear in the center of the display with the battery gauge below it and the torque gauge above it. There are two DIC areas on the left and right of the display.

Follow the prompts on the instrument cluster. See Acceleration Mode (Watts to Freedom)

Launch Status

• Lowering: Vehicle ride height is lowered to optimize weight transfer. Keep doors closed and watch your surroundings.
• Standby: Watts to Freedom is prepared for the vehicle to come to a stop. Cooling: The battery system is cooling for maximum torque delivery.
• Warming: The battery system is warming up for maximum torque delivery.
• Ready: The system is prepared for launch. Press the brake with your left foot and follow the instructions shown in the instrument cluster.

Cluster Menu
There are interactive display areas in the instrument cluster. Locations vary by the selected display layout.

Use the right steering wheel control to open and scroll through the different items and displays.

Press o or p to access the cluster applications. Move or  to scroll through the list of available applications.
Press the switch to select. Not all applications or features are available on all vehicles.

• Vehicle info. This is where the Driver Information Center (DIC) displays can be viewed. See Driver Information Center (DIC)
• Audio
• Navigation
• Phone
  Options

Left/Right Side Info

The information displayed here can be customized from the Options menu. See “Options” below.

• Compass: If equipped, shows the direction the vehicle is heading. Time & Outside Temperature: Displays the current time and outside air temperature.
• Tire Pressure: Shows the approximate pressures of all four tires. Tire pressure is displayed in either kilopascal (kPa) or in pounds per square inch (psi). If the pressure is low, the value for that tire is shown in
• amber. Pitch/Roll: Displays vehicle pitch and roll information.
• force: Indicates the acceleration, braking, and cornering performance of the vehicle. The G-force is displayed as a numerical value and as a graphical depiction.
• None: Displays the info area as empty.
• Audio
  Browse music, select from the favorites, or change the audio source. Move w or x to change the station or go to the next or previous track.
• Navigation
  If there is an active route, the Turn-by-Turn directions will appear on the Navigation Page, if there is no active route a compass will be displayed.
• Phone
  If there is no active phone call, view recent calls, or scroll through contacts.
• Options
  Move w or x to scroll through items in the Options menu.
• Display Layout: Choose Lunar, Clean, Sport, Off-Road, and Digital layout by pressing the switch while the desired item is highlighted. Exit the Layout menu by pressing o.
• Left/Right Side Info: Press the switch to select the items to be displayed in the display areas. See “Left/Right Side Info” previously in this section.
• Info Page Options: Press the witch to select the items to be displayed in the Info app. See Driver Information Center (DIC)
• Units: Choose US or metric units by pressing the w / x switch while the desired item is highlighted.
• Speed Warning: Press the switch when Speed Warning is displayed to set the Speed Warning. Move w or x to adjust the value and press the w / x switch to set the speed.

The Speed Warning display allows the driver to set a speed that they do not want to exceed. Once the speed is set, this feature can be turned off by pressing while viewing this page. If the selected speed limit is exceeded, a pop-up warning is displayed with a chime.

• Speed Sign Display: Press the switch while the desired item is highlighted to turn on or off. Shows sign information, which comes from a roadway database in the onboard navigation system if equipped. The sign will show “− −” when offline maps are unavailable. See Maps
• Software Information :
  Displays open-source software information. Reset To Defaults: Allows the driver to reset to default settings.
• Speedometer
  The speedometer shows the vehicle speed in either kilometers per hour (km/h) or miles per hour (mph).
• Odometer
  The odometer shows how far the vehicle has been driven, in either kilometers or miles.
• Trip Odometer
  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)

Battery Gauge (High Voltage)

Metric Lunar Battery Gauge Shown, Others Similar

English Lunar Battery Gauge Shown, Others Similar

This displays the high voltage battery state of charge. The value at the bottom is an estimate of how far the vehicle can be driven on the remaining charge based on recent driving habits, conditions, and HVAC usage.

The fill bars shown inside of the gauge indicate the percentage range as estimated from current vehicle conditions and climate settings. The range estimate on the bottom also may be affected by climate settings, current vehicle conditions and ambient conditions. The estimated range may increase and decrease based on climate control energy consumption.

Driving at sustained high speeds, driving aggressively through hard acceleration and/ or braking events, excessive HVAC usage, using heated or cooled seats, battery preconditioning, and performance modes can affect vehicle range estimates.

When the high voltage battery state of charge level gets low, the gauge will change color to amber. When the charge is very low the gauge will flash, and the estimated range value on the bottom will change to LOW. Additional alerts may display and a sound may also be heard at low state of charge.

Power Indicator Gauge

Lunar Power Indicator Gauge Shown, Others Similar

The power indicator gauge is in the center of the display to the right of the speedometer in the Lunar layout. This gauge displays the instantaneous charge and consumption power of the high-voltage battery. Maximum power consumption is available when the high-voltage battery is fully charged. During normal operation, a slight reduction in consumption power may occur as the high voltage battery state of charge decreases

Regenerative Braking

When regenerative braking is active, there battery icon appears green and will show a green tail on the fill bar. The power indicator gauge value shows the amount of instantaneous power being regenerated. Regenerative Power Limited
Regenerative power may be limited when the high-voltage battery is near full charge or cold. This will affect the vehicle’s maximum regenerative braking power.

Watts To Freedom

Acceleration Mode Torque Gauge Shown

1. Progress Bar
2. Active Torque
3. Freedom Zone
4. Peak Hold Bar

The power indicator gauge is replaced with the torque gauge while in Acceleration Mode. It is located centered on the top of the display. Follow the prompts on the instrument cluster. See Acceleration Mode (Watts to Freedom)

• Preparing: While the vehicle is preparing the progress bars fill and appear blue.
• Complete: As the vehicle has completed preparation the progress bars show full with a white line separating the active torque fill from the freedom zones.
• Ready: When the vehicle is stopped and ready the white line disappears, and the progress bars remain blue until the active torque crosses into freedom zones.
• Launch: As the vehicle launches the active torque moves into the freedom zones and the progress bars become orange. The peak hold bars appear at the leading edge of the active torque.
• Torque Ramp Down: When the torque is ramping down the peak bars are held where the active torque peaked.
• Freedom Zones Vacated: While the freedom zones are vacated nothing further happens until the launch run is exited and the throttle is lifted.
• Throttle Lifted: As the throttle is lifted the white lines close off the freedom zones. The active torque decreases and the orange bars turn back to blue to reflect the current preparation state.
• Peak Bars Removed: Finally, the peak hold bars are removed after the vehicle exits launch run.

Seat Belt Reminders

Driver Seat Belt Reminder Light
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.

Front Passenger Seat Belt Reminder Light

The vehicle may have a front passenger seat belt reminder light near the passenger airbag status indicator. See Passenger Sensing System.

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.

Airbag Readiness Light

This light shows if there is an electrical problem with the airbag system. It is located in the instrument cluster. 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.

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.

Warning

If the airbag readiness light stays on after the vehicle is started or comes on while driving, it means the airbag system might not be working properly. The airbags in the vehicle might not inflate in a crash, or they could even inflate without a crash. To help avoid injury, have the vehicle serviced right away.
If there is a problem with the airbag system, a Driver Information Center (DIC message may also come on.
Passenger Airbag Status Indicator The vehicle has a passenger sensing system.
See Passenger Sensing System for important safety information. The overhead console has a passenger airbag status indicator.

United States

Canada

is on, there may be a problem with the lights or the passenger sensing system. See your dealer for service right away.

Warning

If the airbag readiness light ever comes on and stays on, it means that something may be wrong with the airbag system. To help avoid injury to yourself or others, have the vehicle serviced right away. See Airbag Readiness Light 0 100 for more information, including important safety information.

Charging System Light (12-Volt Battery

The charging system light comes on briefly when the vehicle is started, as a check to show the light is working.
If the light stays on, or comes on while driving, there could be a problem with the electrical charging system. Have it checked by your dealer. Driving while this light is on could drain the 12-volt battery.
If a short distance must be driven with the light on, be sure to turn off all accessories, such as the radio. Find a safe place to stop the vehicle.

Low State of Charge Light

 

This light comes on when the vehicle’s state of charge is low. Proceed to a charging station to charge the vehicle.

Charge Cord Connected Light

If equipped, this light comes on when a charge cord is connected to the vehicle.

Battery Fault Light

This light indicates a fault with the high-voltage battery. A message may also display in the Driver Information Center (DIC). See your dealer for service.

Propulsion Power is Limited Light

If equipped, these lights display when th vehicle’s propulsion power is limited, which may affect the vehicle’s ability to accelerate.

The vehicle may be driven while these lights are on, but maximum acceleration and speed may be limited.

Service Vehicle Soon Light (Propulsion System Failure)

This light comes on if a condition exists that may require the vehicle to be taken in for service.

If the light comes on, take the vehicle to your dealer for service as soon as possible.

Brake System Warning Light

This light comes on briefly when the vehicle is turned on to show that the light is working. 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, there is a brake problem. Have the brake system inspected right away. This light may come on if the brake fluid is low. See Brake Fluid

If the light comes on while driving, pull off the road and stop carefully. 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 Transporting a Disabled Vehicle

Warning

The brake system might not be working properly if the brake system warning light is on. Driving with the brake system warning light on can lead to a crash.
If the light is still on after the vehicle has been pulled off the road and carefully stopped, have the vehicle towed for service.

Electric Parking Brake Light

 

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.

Service Electric Parking Brake Light

 

the vehicle is turned on. 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 or comes on while driving, there is a problem with the Electric Parking Brake (EPB). Take the vehicle to a dealer as soon as possible. In addition to the parking brake, other safety functions that utilize the EPB may also be degraded.

A message may also be displayed in the Driver Information Center (DIC). See Electric Parking Brake.

Antilock Brake System (ABS) Warning Light

This light comes on briefly when the vehicle is turned on to show that the light is working. If it does not come on then, have it fixed so it will be ready to warn you if there is a problem.

Engagement of the 4WD front axle lock will disable ABS and illuminate the ABS warning light. The ABS warning light will turn off when the front axle lock is disengaged.

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

Four-Wheel-Drive Light

This light is amber when the electric four-wheel drive (e4WD) system is limited, and will turn off when the system is working normally.

If this light is red, there may be a malfunction. See your dealer.

See Four-Wheel Drive

Lane Keep Assist (LKA) Light

If equipped, the Lane Keep Assist Light may display the following colors:

• Blank: LKA is disabled.
• White: Appears when the vehicle starts.
• A steady white light indicates that LKA is not ready to assist.
• Green: Appears when LKA is turned on and ready to assist. LKA will gently turn the steering wheel if the vehicle approaches a detected lane marking.
• Amber: Appears when LKA is active.
• The light flashes amber as a Lane Departure Warning (LDW) alert to indicate that the lane marking has been unintentionally crossed. If the system detects you are steering intentionally (to pass or change lanes), the LDW alert may not display.

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)

Automatic Emergency Braking (AEB) Disabled Light

This indicator displays when you turn off Automatic Emergency Braking (AEB) or Front Pedestrian Braking (FPB).
This indicator will also display if AEB or FPB is unavailable due to malfunction, weather conditions, or if the windshield is not clean.

See Automatic Emergency Braking (AEB)

See Front Pedestrian Braking (FPB) System

Vehicle Ahead Indicator

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

Pedestrian Ahead Indicator

If equipped, this indicator will display amber when a nearby pedestrian is detected in front of the vehicle.

See Front Pedestrian Braking (FPB) System

Traction Off Light

This light comes on briefly when the vehicle is turned on to show that the light is working. If it does not come on then, have it fixed so it will be ready to warn you if  there is a problem.

The traction off light comes on when the Traction Control System (TCS) has been turned off. If StabiliTrak/Electronic Stability Control (ESC) is turned off, TCS is also turned off. To turn TCS and ESC off and on, see Traction Control/Electronic Stability Control.

If TCS is off, wheel slip during acceleration is not limited unless necessary to help protect the driveline from damage. Adjust driving accordingly.

StabiliTrak OFF Light

This light comes on briefly when the vehicle is turned on to show that the light is working. If it does not come on then, have it fixed so it will be ready to warn you if there is a problem.

This light comes on when the StabiliTrak/ Electronic Stability Control (ESC) system is turned off. If StabiliTrak/ESC is off, the Traction Control System (TCS) is also off. To turn ESC off and on, see

Traction Control/ Electronic Stability Control

If ESC and TCS are off, the systems do not assist in controlling the vehicle. Adjust driving accordingly.

Traction Control System (TCS)/ StabiliTrak Light

This light comes on briefly when the vehicle is turned on to show that the light is working. 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 is on and not flashing, the TCS and potentially the StabiliTrak/ESC system are not fully operational and may not assist in maintaining control. Adjust driving accordingly. If the condition persists, see your dealer as soon as possible. A Driver Information Center (DIC) message may display.

The light flashes when the TCS and/or the StabiliTrak/ESC system is actively working. See Traction Control/Electronic Stability Control.

Trailer Sway Control Light

This light will flash when Trailer Sway Control is active. See Trailer Sway Control (TSC)

Driver Mode Control Light

This light comes on when the Tow/Haul Mode is selected.

This light comes on when Off-Road Mode is selected

This light comes on when Terrain Mode is selected.

This light comes on when My Mode is selected. See Driver Mode Control.

Four-Wheel Steering Light (Crab Walk Light)

This light is amber when Rear Wheel Steering is off.

This light is amber when Crabwalk Mode is active.

Air Suspension Light

This light comes on when the air suspension is raised to Extract Mode.

This light comes on when the air suspension is raised to increased ground clearance height.

It will flash white and give an alert to indicate that the vehicle is changing to a higher ride height.

This light comes on when the air suspension is lowered for easy entry and exit from the vehicle, or when Acceleration Mode (Watts to Freedom) is activated.

It will flash white and give an alert to indicate that the vehicle is changing to a lower ride height.

This light comes on when the air suspension is in Service Mode or Alignment Mode.

Tire Pressure Light

If equipped with the Tire Pressure Monitor System (TPMS), this light comes on briefly when the vehicle 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 be displayed. Stop as soon as possible, and inflate the tires to the pressure value shown on the Tire and Loading Information label. See Tire Pressure.

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 every time the vehicle is started. See Tire Pressure Monitor Operation

Security Light

The security light should come on briefly as the vehicle 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 vehicle does not start, there could be a problem with the theft-deterrent system. See Immobilizer Operation

Vehicle Ready Light

 

The vehicle ready light comes on whenever the vehicle is parked and ready to be driven.

High-Beam On Light

This light comes on when the high-beam headlamps are in use. See Headlamp High/ Low-Beam Changer

IntelliBeam Light

If equipped, this light comes on when the IntelliBeam system is enabled. See Exterior Lamp Controls

Lamps On Reminder

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

Cruise Control Light

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.

Adaptive Cruise Control Light

This light is white when the Adaptive Cruise Control (ACC, if equipped) is on and ready, and turns green when the ACC is set and active

Curve Speed Control Light

If equipped, this light may illuminate green when ACC is actively controlling the vehicle speed and detects a sharp curve on the road ahead.

ACC automatically slows the vehicle down while navigating the curve and may increase speed out of the curve, but will not exceed the set speed.

See Adaptive Cruise Control (Advanced)

Super Cruise Light

This light comes on to show the status of Super Cruise. See Super Cruise

Door Ajar Light

This light comes on when a door is open or not securely latched. Before driving, check that all doors are properly closed.

Information Displays

Charging

• Important Information about Electric Vehicle Charging
• Charging an electric vehicle can stress a building’s electrical system more than a typical household appliance.
• Charge cord limits can vary from vehicle to vehicle, and increased charging rates can stress a building’s electrical system.
• Before plugging into any electrical outlet, have a qualified electrician inspect and verify the electrical system (electrical] outlet, wiring, junctions, and protection devices) for heavy-duty service at a 12 amp continuous load.
•  

• FAQs