how to fix the rearview camera glitching on GMC Sierra T1XX (2019-Present)?

GMC Sierra T1XX (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

556 words

Problem Statement

Learn how to diagnose and fix the glitching rearview camera on GMC Sierra T1XX (2019-Present). Step-by-step guide with symptoms, diagnostics, and repair instructions.

Affected Component

Electrical

Estimated Time

1-2 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical systems to avoid short circuits.

Symptoms

•Rearview camera display flickering or unstable
•Delayed video feed when shifting into reverse
•Inconsistent camera activation (camera does not always turn on)
•Distorted image or lines appearing on the screen
•Error messages related to the camera system on the infotainment display

Diagnostic Steps

1
Inspect the camera lens for dirt, debris, or damage.
2
Check for any loose or damaged wiring connectors at the camera and the display unit.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the camera system.
4
Update the vehicle infotainment system software to the latest version.
5
Test the rearview camera with a multimeter to ensure proper voltage and ground are present.

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
•Torque wrench

Parts Required

•Replacement rearview camera (if necessary)

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Diagnostic Steps

1
Inspect the camera lens for dirt, debris, or damage.
2
Check for any loose or damaged wiring connectors at the camera and the display unit.
3
Use an OBD-II scanner to check for any diagnostic trouble codes (DTCs) related to the camera system.
4
Update the vehicle infotainment system software to the latest version.
5
Test the rearview camera with a multimeter to ensure proper voltage and ground are present.

Solution

1. Preparation

Gather all necessary tools and parts.
Park the vehicle on a flat surface and engage the parking brake.
Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Inspect and Clean the Camera

Locate the rearview camera, usually mounted on the tailgate handle or above the license plate.
Wipe the camera lens with a clean, soft cloth to remove any dirt or debris.
If the lens is cracked or damaged, proceed to replace the camera.

3. Check Wiring and Connections

Remove the rear trim panel in the cargo area to access the camera wiring harness.
Inspect the wiring for fraying, corrosion, or disconnection.
Ensure that all connectors are securely fastened. If any connections are loose, reseat them properly.

4. Update Infotainment System

Turn on the vehicle and navigate to the settings menu on the infotainment display.
Check for any available software updates and follow the prompts to install them if necessary.
Restart the infotainment system after the update is complete.

5. Replace Camera (if necessary)

If cleaning and checking connections do not resolve the issue, remove the camera by unscrewing it from its mounting.
Disconnect the wiring harness from the camera.
Install the new camera by reversing the removal process, ensuring all connections are secure. Torque any screws to the manufacturer's specifications.

6. Reconnect Battery and Test

Reconnect the vehicle battery.
Shift the vehicle into reverse to test the rearview camera operation.
Ensure the video feed is stable and clear.