how to fix GMC Sierra T1XX (2019-Present) backup camera not working

GMC Sierra T1XX (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

4 min read

606 words

Problem Statement

Learn how to diagnose and fix the backup camera issue in GMC Sierra T1XX (2019-Present). Step-by-step guide with symptoms, diagnostic steps, 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 components to prevent shocks or shorts.
•Ensure the vehicle is securely parked to avoid accidental movement during repairs.

Symptoms

•Backup camera display is blank or unresponsive
•Error message on the infotainment screen indicating a camera system fault
•Distorted or flickering image when the camera is activated
•Difficulty engaging reverse gear due to system integration
•No audible warning signals when reversing

Diagnostic Steps

1
Inspect the camera lens and housing for any physical damage or obstructions.
2
Check the vehicle's fuse panel for any blown fuses related to the rearview camera system.
3
Scan the vehicle's onboard diagnostic system using an OBD-II scanner for any error codes.
4
Verify the connections at the camera and the head unit for secure and corrosion-free contacts.
5
Test the camera voltage supply using a multimeter to ensure it is receiving power.
6
Perform a software update on the vehicle's infotainment system if applicable.

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
•Electrical contact cleaner
•Fuse puller

Parts Required

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

Related Faults

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Diagnostic Steps

1
Inspect the camera lens and housing for any physical damage or obstructions.
2
Check the vehicle's fuse panel for any blown fuses related to the rearview camera system.
3
Scan the vehicle's onboard diagnostic system using an OBD-II scanner for any error codes.
4
Verify the connections at the camera and the head unit for secure and corrosion-free contacts.
5
Test the camera voltage supply using a multimeter to ensure it is receiving power.
6
Perform a software update on the vehicle's infotainment system if applicable.

Solution

1. Preparation

Gather necessary tools and parts.
Disconnect the vehicle battery to prevent electrical shorts.
Ensure the vehicle is parked on a level surface with the transmission in "Park."

2. Inspect and Clean the Camera

Remove any dirt or debris from the camera lens with a soft cloth.
Check the camera housing for cracks or damage; replace if necessary.

3. Check and Replace Fuses

Locate the fuse panel, usually found under the dashboard or in the engine compartment.
Identify the fuse for the backup camera (refer to the owner’s manual).
Remove the fuse using a fuse puller and inspect it for continuity. Replace with the same amperage fuse if blown.

4. Inspect Electrical Connections

Access the rear camera harness by removing the trim panel or access cover as needed.
Disconnect the camera connector and inspect for corrosion or damage.
Clean the connector pins with electrical contact cleaner and reconnect securely.

5. Test Camera and Voltage Supply

Using a multimeter, check the voltage at the camera connector to ensure it receives approximately 12V when the vehicle is in reverse.
If no voltage is present, trace wiring back to the head unit and inspect for any breaks or shorts.

6. Update Infotainment System

Connect a compatible USB drive with the latest software update to the infotainment system.
Follow the on-screen prompts to complete the update process, which may take several minutes.

7. Reassemble and Test

Reattach any trim panels removed during the inspection.
Reconnect the vehicle battery.
Test the backup camera by shifting the vehicle into reverse and checking the display.