GMC Sierra T1XX (2019-Present) rear view camera not working, how to fix it?

GMC Sierra T1XX (2019-Present)

Error Codes

2-4 hours

Time

medium

Difficulty

medium

Severity

3 min read

571 words

Problem Statement

Learn how to diagnose and fix the rear view camera issue in GMC Sierra T1XX (2019-Present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

2-4 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect the battery before working on electrical components.
•Allow the vehicle to cool down before performing any checks near the rear components.

Symptoms

•Rear view camera display is blank or shows a black screen
•"Camera Unavailable" message on the infotainment screen
•Camera intermittently working or flickering
•Poor image quality or distorted video feed when operational
•Backup assistance features (if applicable) are not functioning

Diagnostic Steps

1
Check for any error codes using an OBD-II scanner.
2
Inspect the rear view camera connector for loose or damaged wires.
3
Verify that the camera lens is clean and unobstructed.
4
Test the camera's power supply using a multimeter.
5
Check the infotainment system settings to ensure the camera is enabled.
6
Conduct a visual inspection of the wiring harness from the camera to the multimedia unit.

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
•Trim removal tools
•Cleaning cloth

Parts Required

•Rear view camera (if replacement is necessary)
•Electrical connectors (if damaged)

Related Faults

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Diagnostic Steps

1
Check for any error codes using an OBD-II scanner.
2
Inspect the rear view camera connector for loose or damaged wires.
3
Verify that the camera lens is clean and unobstructed.
4
Test the camera's power supply using a multimeter.
5
Check the infotainment system settings to ensure the camera is enabled.
6
Conduct a visual inspection of the wiring harness from the camera to the multimedia unit.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, trim removal tools, cleaning cloth.
Ensure the vehicle is parked on a level surface and the ignition is turned off.
Disconnect the negative battery terminal to prevent electrical shorts.

2. Inspect Camera and Wiring

Step 1: Remove the rear view camera housing.
- Use trim removal tools to carefully pry off the plastic cover without damaging it.
- Remove the screws or clips securing the camera.
Step 2: Inspect the camera connector.
- Check for corrosion or damage on the connector pins.
- Clean any corrosion with electrical contact cleaner.
Step 3: Inspect wiring for damage.
- Follow the wiring harness from the camera to the multimedia unit, looking for frays or breaks.
- Repair any damaged wiring using solder and heat shrink tubing or electrical tape.

3. Test Power Supply

Step 1: Reconnect the negative battery terminal.
Step 2: Use a multimeter to check the power supply to the camera.
- Set the multimeter to DC voltage and connect the probes to the power and ground pins of the camera connector.
- Confirm that the voltage is within specifications (usually around 12V).
Step 3: If no power is detected, trace the wiring back to locate the fault.

4. Replace Camera (if necessary)

Step 1: If the camera is faulty, purchase a replacement camera compatible with GMC Sierra T1XX.
Step 2: Install the new camera by reversing the removal steps.
Step 3: Secure the camera housing properly and reattach the trim cover.