Is your GMC’s speed limit display acting up? This frustrating issue affects many drivers, making it harder to stay aware of local speed limits. When your GMC speed limit display stops working, it’s usually due to software glitches, map data issues, or hardware problems in the heads-up display.
Your vehicle’s speed limit display is a key safety feature that helps you avoid tickets and drive more safely. The good news is that many display issues can be fixed without an expensive trip to the dealer. Read on to discover the common causes and simple solutions that could get your system working again.
Understanding the GMC Speed Limit Display Feature
The speed limit display in your GMC vehicle uses advanced sensors and GPS technology to show real-time speed limits on your dashboard or heads-up display (HUD). This smart feature helps you drive safely and avoid speeding tickets.
Basics of Speed Limit Display
Your GMC’s speed limit display system shows the current speed limit right on your dashboard or HUD. The display updates automatically as you drive through different speed zones.
You’ll see a clear, digital readout that’s easy to read day or night. The system uses a combination of cameras and GPS data to recognize speed limit signs and display the information.
The display appears in a prominent location, usually next to your current speed reading. This makes it simple to check both numbers at a quick glance.
How It Enhances Safety and Awareness
The real-time speed limit information helps keep you informed, especially in unfamiliar areas. You’ll always know the posted limit without searching for road signs.
Your GMC can alert you when you exceed the speed limit. These warnings come as:
- Visual alerts on the dashboard
- Color changes in the display
- Optional audible warnings
This feature is especially helpful when speed limits change frequently or when driving through construction zones.
Integration with OnStar and Navigation Systems
The speed limit display works together with your GMC’s OnStar system and built-in navigation to provide accurate information. This integration ensures reliable updates even when physical speed limit signs are missing or obscured.
Your navigation system’s maps contain speed limit data for most roads. This serves as a backup when the camera can’t read signs clearly.
The system updates through regular OnStar map refreshes, keeping the speed limit database current as road conditions change.
Troubleshooting Common Issues
When your GMC speed limit display stops working, there are several key problems you can fix yourself. These fixes range from simple system restarts to dealing with GPS signal issues.
Steps to Diagnose Display Problems
Your first step should be to restart the system by turning off your vehicle and waiting for a few minutes before restarting.
Check if your display is showing any error messages or blank screens. Write these down to help identify patterns.
Make sure your screen is clean and free from moisture, as water on the display can cause malfunctions.
Quick Checks:
- Screen brightness settings
- Display power connection
- Visual damage to screen
- System software version
Dealing with Navigation System Errors
Check your GPS signal strength in an open area away from tall buildings or tunnels.
If your location appears stuck, try these steps:
- Go to Settings
- Select Apps & Permissions
- Find and select Maps
- Clear cache and data
Your navigation system needs regular map updates to function properly. Connect to Wi-Fi periodically to receive these updates.
Camera and Sensor Malfunctions
Clean any external cameras and sensors that help determine speed limits. Dirt, snow, or debris can block their view.
Look for physical damage to camera lenses or sensor covers. Even small cracks can affect performance.
Common Camera Issues:
- Foggy or cloudy lens
- Loose connections
- Misalignment after vehicle service
- Blocked view from license plate frames
Hardware Issues and Solutions
Check for loose connections in your Head-Up Display (HUD) system. Wiggling wires while the display is on can help identify connection problems.
Test your vehicle’s battery voltage. Low power can cause display glitches.
Warning Signs of Hardware Problems:
- Flickering display
- Intermittent function
- Distorted images
- Delayed responses
Consider visiting your dealer if these basic fixes don’t work, as some hardware issues need professional repair.
Reset and Configuration Procedures
Getting your GMC’s speed limit display working again often just needs a quick reset or adjustment of settings. These simple steps can fix most common display issues.
How to Reset the Speed Limit Display
Resetting the speed limit feature starts in your vehicle’s settings menu. Go to Settings > Apps & Permissions, then scroll to Maps.
Clear the app’s cache and data through the Maps settings menu. This often fixes stuck or missing speed limits.
Restart your infotainment system by pressing and holding the power button for 10 seconds. Wait 30 seconds, then turn it back on.
If these steps don’t work, try disconnecting your vehicle’s battery for 15 minutes to perform a complete system reset.
Configuring Display Settings
Open your instrument cluster menu using the steering wheel controls. Navigate to the Vehicle Settings section.
You can adjust the speed limit display visibility through the Head-Up Display (HUD) settings. Choose your preferred brightness and position.
Make sure your GPS and navigation systems are enabled. The speed limit feature needs these to work properly.
Check that you have an active data connection. Your GMC needs internet access to receive current speed limit information.
Customizing Alerts and Speed Warnings
Set up speed warning notifications in your vehicle settings menu. Choose when you want alerts – at the speed limit or a certain amount above it.
You can customize the alert type:
- Visual warnings on the display
- Audible chimes
- Both visual and audio alerts
Adjust the warning threshold to your preference. Most drivers set it 5-10 mph above the posted limit.
Pick alert intensity levels that work best for you. Start with gentler settings and adjust if needed.
Subscription Services and Data Plans
The speed limit display feature on GMC vehicles depends on active data connectivity through specific service packages. Your GMC needs an active data plan to access real-time speed limit information.
Understanding GMC’s Data Packages
GMC offers several data plans through their connected services platform. The basic package starts at $15 monthly for 2GB of data.
You can choose between different tiers based on your usage needs. Premium plans include unlimited data and additional features like remote start and vehicle diagnostics.
Data packages connect through the vehicle’s built-in 4G LTE system. This provides reliable coverage in most areas across North America.
Speed Limit Service Subscription
Speed limit display features require an active subscription to function properly. The service stops working when your trial period ends.
Your vehicle receives real-time speed limit data through GPS and map services. This requires both an active data connection and subscription.
The free trial typically lasts 30 days after vehicle purchase. After that, you’ll need to select a paid plan to keep the feature working.
Benefits of the OnStar Subscription
OnStar premium plans unlock full access to your vehicle’s connected features, including speed limit display.
The subscription includes:
- Real-time speed limit updates
- Navigation services
- Remote vehicle access
- Emergency assistance
- Vehicle diagnostics
You can manage your OnStar subscription through the GMC app or by calling the service center. Plans are flexible and can be modified or cancelled at any time.
