why does the screen go black on my GMC Sierra T1XX (2019-Present)

GMC Sierra T1XX (2019-Present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

518 words

Problem Statement

Learn how to diagnose and fix the black screen issue on GMC Sierra T1XX (2019-Present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to prevent shorts and electrical hazards.

Symptoms

•Infotainment screen suddenly turns off or goes black
•Occasional flickering of the display before turning off
•No response to touch inputs when the screen is black
•Audio continues to play despite screen being off
•Restarting the vehicle temporarily resolves the issue
•Check for any error messages or notifications on the screen before it goes black

Diagnostic Steps

1
Check for software updates by accessing the settings menu in the infotainment system.
2
Inspect the vehicle's battery voltage; ensure it is within normal operating range (12.4V - 12.7V).
3
Use an OBD-II scanner to check for any related trouble codes.
4
Inspect wiring and connectors behind the infotainment screen for loose or damaged connections.
5
Perform a hard reset of the infotainment system by disconnecting the vehicle battery for a few minutes.
6
Monitor the operation of the screen while driving over bumps to see if the issue is related to vibrations.

Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

✓Test the affected component to ensure it functions correctly
✓Check for any error codes or warning lights
✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

•Follow the manufacturer's recommended maintenance schedule
•Address warning signs early before they develop into major issues
•Use quality parts and fluids recommended for your vehicle
•Keep detailed records of all repairs and maintenance

Tools & Equipment Required

•OBD-II scanner
•Multimeter
•Screwdriver set

Parts Required

•New battery (if battery testing reveals it is faulty)
•Wiring connectors (if repairs are needed)

Related Faults

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Symptoms

•Infotainment screen suddenly turns off or goes black

•Occasional flickering of the display before turning off

•No response to touch inputs when the screen is black

•Audio continues to play despite screen being off

•Restarting the vehicle temporarily resolves the issue

•Check for any error messages or notifications on the screen before it goes black

Diagnostic Steps

1
Check for software updates by accessing the settings menu in the infotainment system.
2
Inspect the vehicle's battery voltage; ensure it is within normal operating range (12.4V - 12.7V).
3
Use an OBD-II scanner to check for any related trouble codes.
4
Inspect wiring and connectors behind the infotainment screen for loose or damaged connections.
5
Perform a hard reset of the infotainment system by disconnecting the vehicle battery for a few minutes.
6
Monitor the operation of the screen while driving over bumps to see if the issue is related to vibrations.

Solution

1. Software Update

Navigate to the settings menu in the infotainment system.
Select "System Updates" and check for available updates.
Follow prompts to install any updates.

2. Battery Inspection and Replacement (if necessary)

Tools Required: Multimeter
Measure the battery voltage using a multimeter. If the voltage is low:
1. Disconnect the negative terminal of the battery (safety warning: always disconnect battery before working on electrical systems).
2. Replace the battery with a new one (if needed), ensuring it matches specifications.
3. Reconnect the negative terminal and check if the screen functions normally.

3. Wiring Inspection

Tools Required: Screwdriver set, multimeter
Remove the trim panel surrounding the infotainment screen using a screwdriver.
Inspect the wiring harness for any loose connections or damage.
Secure any loose connections and repair any damaged wires.
Reassemble the trim panel.

4. Hard Reset of Infotainment System

Disconnect the negative terminal of the battery.
Wait for at least 5 minutes to allow the system to reset.
Reconnect the negative terminal and start the vehicle to check if the screen operates correctly.