Display Screen: GMC Hummer EV 2022 Warning Messages
In the 2022 GMC Hummer EV, the display screen is a key way for the car to send important messages and alerts to the driver, keeping them aware and in charge of their vehicle’s condition. The screen gives you real-time updates on important things like battery health, charging status, car diagnostics, and safety alerts through an easy-to-use interface and clear text. Whether they’re telling drivers that the battery is low, that there were problems with the charging, or that the system might not work right, these messages are very important for keeping the car running well and keeping drivers safe. The display screen in the 2022 Hummer EV is a key part of GMC’s commitment to innovation and driver-centered design.
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.
- Electrical outlets may wear out with normal usage or may be damaged over time, making them unsuitable for electric vehicle charging.
- Check the electrical outlet/plug while charging and discontinue use if the electrical outlet/plug is hot, then have the electrical outlet serviced by a qualified electrician.
- When outdoors, plug into an electrical outlet that is weatherproof while in use.
- Mount the charging cord to reduce strain on the electrical outlet/plug.
- Do not place the charge cord in a position where it is expected to be submerged in water.
Danger
- Improper use of portable electric vehicle charge cords may cause a fire, electrical shock, or burns, and may result in damage to property, serious injury, or death.
- Do not use extension cords, multi-outlet power strips, splitters, grounding adapters, surge protectors, or similar devices.
- Do not use an electrical outlet that is worn or damaged, or will not hold the plug firmly in place.
- Do not use an electrical outlet that is not properly grounded.
- Do not use an electrical outlet that is on a circuit with other electrical loads.
Energy App
The Energy app gives you access to features that will help you better understand and control how the vehicle manages energy. Along with providing a central location to determine and review your charging preferences, the Energy app offers live information on how the vehicle is using energy. To launch the Energy app from the infotainment home screen, touch the Energy icon. There are four selections to choose from: Charging, Schedule, Energy Usage, and Settings. When you launch Energy for the first time, the Charging screen will display.
Charging
To view the current charging status in the infotainment display, touch Charging. On the Charging screen, there is a range of information associated with the next Charging session, as well as the ability to specify when you would like to charge the vehicle. The choices available to charge are Charge Now or Charge Later. To create a charge schedule see “Creating a Charge Schedule” under “Schedule” below. The Charging screen shows and allows you to determine how the vehicle charges the next time it is plugged in.
Charge Now
Charge Now is the default charging mode for your vehicle. The vehicle begins charging immediately when it is plugged in and authenticated at the charging location.
With Charge Now selected, the Charging screen displays:
- Text explaining that the vehicle will charge immediately when plugged in.
- Charge Level: The percentage to which you would like the vehicle to charge.
- Charge Complete by/in: The estimated time at which the vehicle will reach the desired Charge Level.
- An estimate of the vehicle’s range upon completing the charging session.
The default charge level is 100% when plugged in. To set a different charge level, touch the percentage shown under Charge Level to display the Charge Level dialog.
Warning
Do not charge your vehicle’s battery above 80% charge if you are going to drive down long, steep grades such as mountain passes. This provides room in the battery for regenerative braking to supplement your conventional brakes during the descent. This is especially important when towing a trailer, which puts additional stress on your vehicle’s braking system.
The Charge Level dialog displays:
- The Charge Level Gauge with a color-filled portion displays the vehicle’s current charge level. Use
or drag the marker to adjust the desired Charge Level.
- Range: An estimate of the vehicle’s range upon reaching the Charge Level specified in this dialog.
- An
allows you to close the Charge Level dialog. Settings made here are automatically saved when the dialog is exited.
To lower the desired Charge Level, drag the Charge the Level marker to the left, and to increase it drag the marker to the right. The Charge Level percentage appears above your finger, updating in 5% increments as you drag. The Range estimate updates once the marker is released at the desired Charge Level. To optimize battery health, the minimum allowable Charge Level is determined by the vehicle. Touch to exit the Charge Level dialog and accept the changes. When the dialog closes, the charging information listed on the Charging screen is updated to reflect any changes made.
Charge Later
Instead of charging immediately to a desired Charge Level, you may choose to delay the charge to the vehicle and have it complete by your desired departure time. This may be a more economical choice and a more efficient use of energy when charging at home. To use this mode, touch the Charge Later tab from the Charging screen.
With Charge Later selected, the Charging screen displays:
- Text explaining that your vehicle will delay the planned charge to be ready by the time specified.
- Charge Complete by The time at which the vehicle will reach the desired Charge Level.
- Charge Level: The percentage to which you would like the vehicle to charge.
- An estimate of the vehicle’s range upon completing the charging session.
- Cabin Pre-Conditioning: Allows the vehicle to heat or cool the cabin to your desired temperature using energy from the charger. This means energy from the battery is not used to condition the cabin, ensuring the vehicle gets the greatest range from the charging session. Cabin pre-conditioning happens at the end of the charge, and right before the departure time.
To set the time desired for the vehicle to complete charging, touch the time listed under Charge Complete By. This will display the Charge Complete By dialog.
The Charge Complete By dialog displays:
- A time selector that allows you to specify the hour, and the minutes in 15-minute increments at which the vehicle will reach the desired Charge Level.
- A allows you to close the Charge Complete By dialog. Settings made here are automatically saved when the dialog is exited.
Drag the appropriate sections of the time selector to set the Charge Complete By time. Touch to exit the Charge Complete By dialog and accept the changes made. When the dialog closes, the charging information listed on the Charging screen will update to reflect any changes made. If the time specified does not allow the vehicle enough time to reach the desired Charge Level, a message displays and you can choose to alter either Charge Complete By time or the desired Charge Level. To adjust the desired Charge Level in Charge Later mode, see “Charge Now” earlier in this section.
Setting the Cabin Pre-Conditioning preference:
Touch the switch to turn on Cabin Pre-conditioning. Cabin Pre-Conditioning temperature can be set in Settings, or by touching Cabin Pre-Conditioning on this screen.
Active Charging
During an active charging session, the Charging screen displays and continuously updates the following items:
- Text indicating the vehicle’s current charging status.
- Current Range: The range the vehicle is capable of driving at the current charge level.
- Range Increase Rate: How much range is accumulating per hour of charging?
- Charge Complete at/in: The estimated time at which the vehicle will reach the desired Charge Level.
- The Charge Level Gauge with a portion displaying the vehicle’s current charge level. Use or drag the white marker to adjust the desired Charge Level.
To update the desired Charge Level for the active charging session, drag the marker on the Charge Level Gauge or touch the. Touching the Stop Charge button at any time ends the active charging session and presents a summary of the current vehicle Range, Charge Level, and amount of Range Gained during the charging session.
For Level 1 chargers, you can also select the appropriate Charge Cord Limit of either 8 amps or 12 amps. This determines how much current can flow from an electrical outlet to the vehicle battery. It also ensures proper charge time estimates. When the Charge Cord Limit is changed from 8 amps to 12 amps on a 120V circuit a notification is displayed. If no Home Charge Location is set, the Level 1 Cord Limit will revert to 8 amps every time the vehicle is shifted out of (P) Park.
Range and charge time estimates fluctuate depending on a number of factors such as Charge Cord Level/Limit, battery temperature, and outside air temperature. To monitor your vehicle’s charging status from outside the vehicle, turn on the Headlight Charge Indicator in the Settings screen. The peek-in charging screen can be used to monitor your vehicle’s charge status, To monitor the charging status remotely, download the myGMC app on your mobile device.
DC Fast Charging
The vehicle will immediately begin charging when plugged into a DC fast charging station. While DC Fast Charging, the vehicle will bypass any schedule or departure time selection. The Station Power gauge displays the station’s ability to charge at the rate your vehicle is capable of charging. If you see the Station Power gauge at the bottom of the peek-in screen when you are Fast Charging, the station you are using is not providing as much power as your vehicle is capable of receiving. If you regularly see this gauge at a particular station, consider using another Fast Charging station, or you can try calling the station support line if one is displayed.
Reasons the Station Power gauge may appear, include when:
- The station is unable to provide the amount of energy that your vehicle can handle.
- Multiple vehicles are charging at the same time which may be affecting the charge rate.
- Power is being limited at the charger.
Schedule
The Energy app’s Schedule feature allows a custom charging plan to be set for each day of the week. When the vehicle is plugged in at the Home Charge Location, the Schedule feature will automatically charge to the desired Charge Level and pre-condition the cabin by the time set in the Schedule. This feature acts as a more customizable Charge Later setting than the one on the Charging screen.
Creating a Schedule
To create a Schedule, touch the Create Schedule card on the left. If there is no Home Charge Location set you will be prompted to create one.
The Charging Schedule dialog displays:
- Toggles for each day of the week.
- Charge to: A value selector for setting the desired Charge Level.
- Complete by: A time selector for setting the time the vehicle will reach the desired Charge Level.
- Cabin Pre-Conditioning: Allows the vehicle to heat or cool the cabin to the desired temperature by using energy from the charger.
- A allows you to close the Charging Schedule dialog.
- Save & Close button: Applies any changes made and exits the dialog.
Days can be assigned to the Schedule. Days of the week are represented by their first letter in circular toggles. Touching each toggle illuminates the graphic, confirming that day is assigned to the Schedule. Touching a second time unassigns days from this Schedule, dimming the toggle once again. Select all days to adhere to the settings in this Schedule. If there are multiple charge schedules, days must be unassigned from their current Schedule before they can be assigned to a new one. Once completed with the charging Schedule, touch the Save & Close button to finish creating the schedule. On days that are not assigned a Schedule, the vehicle will begin charging to 100% as soon as it is plugged in, unless otherwise specified on the Charging screen. Home Charge Schedule can be turned ON or OFF. To enable or disable all charging Schedules, touch the toggle switch next to Home Charge Schedule on the Schedule screen.
Modifying and Deleting Charge Schedules
To modify a Schedule, touch the card on the Schedule screen. This will open a dialog. Make the desired changes and then touch the Save & Close button when finished. To delete the Schedule, simply touch the Delete Schedule button, at which point you will be prompted to confirm your decision.
Charge Settings
To view and change the Charge Settings, touch Settings. Use the arrows to scroll through the list, or hold and drag the list. This screen allows preferences to be set with regard to how the vehicle charges. Touching any item will display options for specifying their behavior.
The Settings screen displays:
Home Charge Location
With a Home Charge Location set, the vehicle can determine whether it is plugged in at home and will charge according to any existing schedules. The Home Charge Location can be changed or deleted on this screen. The wireless service and GPS satellite technologies must be available and operating for features to function properly. These systems may not operate if the battery is disconnected, or if the vehicle has been off for an extended period of time. If GPS is unavailable, a message displays on the infotainment screen. GPS functionality may resume after the next time you drive the vehicle.
Notifications
This section contains on/off preferences for multiple notifications triggered during the Charging session.
Charge Status Feedback: Provides an audible notification through horn chirps that accompany changes in the charging status.
Charge Power Loss Alert: When on, your vehicle will chirp for an extended period of time if charging power is cut off.
Headlight Charge Status Indicator: When on, your vehicle’s headlights will show the charging status. As the battery charges, more LED bars within the headlights will turn on. The headlights will automatically turn off when charging is complete.
DC Fast Charge Battery Conditioning
Adjusts the battery to the optimal temperature for quicker DC Fast Charging. This should be done before charging at a DC Fast Charger. Depending on the outside and battery temperature, battery conditioning could be as long as one hour. While en route using Google Maps, DC Fast Charge Conditioning happens automatically if a DC Fast Charge station has been added to the route.
Cabin Pre-Conditioning Temperature
Allows for the preferred cabin temperature to be set. During your next charging session, the vehicle cabin is warmed or cooled to this temperature if Pre-conditioning is set to ON in either the Charge Later screen or in an active Schedule.
Preferred Charge Times
Allows preferred charge time windows to be enabled for the Home Charge Location during both weekday and weekend scheduled or delayed charging sessions. This allows for charging at a lower cost by charging during the electrical provider’s off-peak period. The vehicle will use these times to reach the desired Charge Level by the scheduled time. If the vehicle cannot reach the desired charge level within these times, it will charge as needed outside of this schedule.
Energy Information
Energy Usage
To view Energy Usage, touch Energy Usage on the infotainment display. This screen displays how energy is being used for the current drive since the last time the vehicle was started.
The Energy Usage screen displays:
Distance Driven: The distance of your current Trip.
Total Energy Used: The amount of energy used during your current Trip, shown in Kilowatt Hours (kWh).
4: For displaying more information about your vehicle’s Energy Usage.
Energy Usage Bar Diagram: A visual representation of the percentage of total energy being used by each Energy Usage Category.
Energy Usage Categories: Climate & Battery Conditioning, Driving & Accessories, and Remote Start. Tap 4 or any Energy Usage Category to learn more about how your vehicle uses energy from the battery.
Driver Information Center (DIC)
The DIC is displayed in the instrument cluster. It shows the status of many vehicle systems.
: Move up or down in a list.
: Press to move between the interactive display zones in the instrument cluster.
Switch: Press to open a menu or select a menu item. Press and hold to reset values on certain screens.
DIC Info Page Options
The info pages on the DIC can be turned on or off through the Options menu.
- Press
to accesses the instrument cluster applications. - Move through the list of available applications.
- Press to select the application, then press
to enter the application menu. - Move to move through the list of possible information displays.
- Press the switch while an item is highlighted to select or deselect that item.
When an item is selected, a checkmark appears next to it.
DIC Info Pages
The following is the list of all possible DIC info page displays. Some may not be available for your particular vehicle. Some items may not be turned on by default but can be turned on through the Options app. See “DIC Info Page Options” earlier in this section.
Trip 1 or Trip 2 and Average Efficiency: The Trip display shows the current distance traveled, in either kilometer (km) or miles (mi), since the trip odometer was last reset. The Average Efficiency shows the approximate average kilometers per kilowatt hour kWh (km/kWh) or miles per kilowatt hour kWh(mi/kWh). This number is calculated based on the number of km/kWh or mi/kWh recorded since the last time this menu item was reset. This number only reflects the approximate average electrical energy economy that the vehicle has at that moment, and changes as driving conditions change. The values can be reset by pressing and holding the switch while either the Trip 1 or the Trip 2 display is active.
Timer: To start the timer, press the switch while this display is active. The display will show the amount of time that has passed since the timer was last reset. To stop the timer, press the switch briefly while this display is active and the timer is running. To reset the timer to zero, press and hold the switch while this display is active.
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. Pressing and holding the switch displays a series of alerts for Tire Manual Learning.
Driver Assistance: If equipped, shows information for Adaptive Cruise Control (ACC), Follow Distance, Lane Keep Assist (LKA), and Forward Collision Alert (FCA).
Trailer Brake: On vehicles with the Integrated Trailer Brake Control (ITBC) system, this display appears in the DIC. TRAILER GAIN shows the trailer gain setting. This setting can be adjusted from 0.0 to 10.0 with either a trailer connected or disconnected. TRAILER OUTPUT shows the power output to the trailer any time a trailer with electric brakes is connected. Output is displayed as a bar graph. Dotted lines may appear in the OUTPUT display if a trailer is not connected.
Off Road: Displays vehicle pitch and roll information, road wheel angle, and four-wheel drive (e4WD) status.
Energy Usage: Shows energy usage of the Driving, Remote Start, Climate, and Conditioning vehicle systems as percentages of overall vehicle energy use.
Suspension Travel: This shows a graphical representation of the current wheel travel upward or downward for all four wheels as the vehicle travels over uneven terrain. The wheel color shown on this display becomes more saturated as the suspension reaches max upward or downward travel. When ride height is adjusted up or down the wheel positions in this graphic show above or below normal ride height on level ground.
Blank Page: No information is displayed in the cluster info display areas.
Info Page Options: Press the switch to select the items to be displayed in the Info app.
Vehicle Messages
Messages displayed on the DIC indicate the status of the vehicle or some action that may be needed to correct a condition. Multiple messages may appear one after another. Press the switch on the steering wheel to acknowledge and clear messages that do not require immediate action. The messages that require immediate action cannot be cleared until that action is performed. All messages should be taken seriously; clearing the message does not correct the problem. If a SERVICE message appears, see your dealer. Follow the instructions given in the messages.
The system displays messages regarding the following topics:
- Service Messages
- Fluid Levels
- Vehicle Security
- Brakes
- Ride Control Systems
- Driver Assistance Systems
-
Cruise Control
-
Lighting and Bulb Replacement
-
Wiper/Washer Systems
-
Doors and Windows
-
Seat Belts
-
Airbag Systems
-
Propulsion
-
Tire Pressure
-
Battery
-
Steering
Propulsion Power Messages
REDUCED ACCELERATION DRIVE WITH CARE
This message displays when the vehicle’s propulsion power is reduced. A reduction in propulsion power can affect the vehicle’s ability to accelerate. If this message is on, but there is no observed reduction in performance, proceed to your destination. Under certain conditions, the performance may be reduced the next time the vehicle is driven. The vehicle may be driven while this message is on, but maximum acceleration and speed may be reduced. Anytime this message stays on or displays repeatedly, the vehicle should be taken to your dealer for service as soon as possible. This message can be displayed when the high-voltage battery charge level is low. This is normal behavior as the vehicle is limiting power due to reduced battery capability with a low charge. Under certain operating conditions propulsion will be disabled. Try restarting after the vehicle has been off for two minutes.
PROPULSION POWER REDUCED DUE TO TEMPERATURE
This message displays when the vehicle is on, the battery temperature is low, and when the vehicle’s performance is limited. The duration of the limited vehicle performance depends, in part, on the high-voltage battery charge level. If the high voltage battery charge level is relatively high, as the vehicle is driven, the battery temperature will increase, and the vehicle will return to normal operation. If the high voltage battery charge level is relatively low the vehicle will not return to normal operation until charged. Keep the vehicle plugged in, even when fully charged, to keep the high-voltage battery temperature ready for the next drive. This is important when outside temperatures are extremely hot or cold.
Vehicle Speed Messages
SPEED LIMITED TO XXX KM/H (MPH)
This message shows that the vehicle speed has been limited to the speed displayed. The limited speed is protection for various propulsion and vehicle systems, such as lubrication, thermal, brakes, suspension, Teen Driver if equipped, or tires.
FAQs
The display screen may show warning messages related to battery health, charging status, vehicle diagnostics, and safety alerts.
The display screen may show a warning message indicating low battery levels, prompting drivers to take appropriate action such as finding a charging station.
Warning messages related to charging errors may appear on the display screen if there are issues with the charging process, such as a faulty charging cable or power supply.
Vehicle diagnostics warning messages could include alerts for issues such as tire pressure abnormalities, engine malfunctions, or fluid levels.
The display screen may show safety alert messages for various safety systems, including lane departure warning, forward collision alert, and blind-spot monitoring.
The warning message for overheating alerts drivers to high engine temperatures, indicating a potential issue that requires immediate attention.
The warning message for low fuel indicates when the vehicle’s fuel level is low, reminding drivers to refuel as soon as possible.
The display screen may show warning messages for brake system issues, such as low brake fluid levels or brake system malfunctions.
The warning message for airbag system malfunctions alerts drivers to issues with the vehicle’s airbag system, potentially affecting its deployment in a collision.
The warning message for door ajar alerts drivers when one of the vehicle’s doors is not fully closed, potentially posing a security or safety risk.
The display screen may show warning messages for traction control system issues, such as detecting wheel slippage or loss of traction.
The warning message for low oil pressure alerts drivers to insufficient oil pressure, which could lead to engine damage if not addressed promptly.
The warning message for lane departure alerts drivers when the vehicle detects that it is unintentionally drifting out of its lane without signaling.
The display screen may show warning messages for potential forward collisions, alerting drivers to hazards or obstacles ahead.
The warning message for low windshield washer fluid alerts drivers when the fluid level is low, indicating the need for a refill.
The display screen may show warning messages for parking assistance system issues, such as detecting obstacles while parking.
Useful Links
View Full PDF: GMC Hummer EV 2022 User Guide | Auto User Guide