why is my GMC Sierra T1XX (2019-Present) backup camera screen black

GMC Sierra T1XX (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

547 words

Problem Statement

Learn how to diagnose and fix a black screen on the backup camera of your GMC Sierra T1XX (2019-Present). Step-by-step guide with tools and procedures.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components to prevent shock or short circuits.

Symptoms

•Backup camera screen is completely black
•"Camera Unavailable" message displayed on the screen
•No image when the vehicle is shifted into reverse
•Backup sensors may be non-functional
•Check if the infotainment system is functioning properly

Diagnostic Steps

1
Inspect the backup camera lens for any physical obstructions or damage.
2
Check the vehicle's infotainment system for any software updates.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the camera system.
4
Verify the connection of the backup camera wiring harness at both the camera and the infotainment system.
5
Test the backup camera with a multimeter to ensure power is reaching the unit.
6
Check the fuse associated with the backup camera and infotainment system.

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
•Socket set
•Flathead screwdriver
•Fuse puller

Parts Required

•Replacement backup camera (if damaged)
•New fuse (if blown)

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Diagnostic Steps

1
Inspect the backup camera lens for any physical obstructions or damage.
2
Check the vehicle's infotainment system for any software updates.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the camera system.
4
Verify the connection of the backup camera wiring harness at both the camera and the infotainment system.
5
Test the backup camera with a multimeter to ensure power is reaching the unit.
6
Check the fuse associated with the backup camera and infotainment system.

Solution

1. Preparation

Gather tools: OBD-II scanner, multimeter, socket set, and a flathead screwdriver.
Ensure the vehicle is parked safely with the engine off.
Disconnect the negative battery terminal to prevent any electrical shock.

2. Inspect Camera and Connections

Remove the backup camera assembly from the rear of the vehicle:
- Use a flathead screwdriver to gently pry out the camera housing if necessary.
- Disconnect the wiring harness from the camera.
Inspect the camera lens for dirt, moisture, or damage; clean or replace if necessary.
Reconnect the wiring harness to ensure a secure fit.

3. Check Fuse

Locate the fuse box, usually found under the dashboard or in the engine compartment.
Identify the fuse for the backup camera (consult the owner's manual for correct fuse location).
Remove the fuse using a fuse puller and inspect it for continuity.
Replace the fuse if it is blown, using the same amperage as specified in the manual.

4. Test Camera Functionality

Reconnect the negative battery terminal.
Shift the vehicle into reverse and check if the backup camera now displays an image.
If the camera still shows a black screen, proceed to test the camera with a multimeter to check for voltage at the wiring harness.

5. Update Infotainment System

If the camera functions correctly but the display is not working, check for any software updates:
- Turn on the vehicle and access the infotainment system settings.
- Navigate to "System Updates" and follow prompts to update if necessary.