how to fix my GMC Sierra T1XX (2019-Present) rearview camera not working?

GMC Sierra T1XX (2019-Present)

Error Codes

1-2 hours

Time

medium

Difficulty

medium

Severity

3 min read

524 words

Problem Statement

Learn how to diagnose and fix the rearview 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 vehicle's battery before working on electrical systems to avoid shorts or shocks.

Symptoms

•Rearview camera display is blank
•"Camera Unavailable" message on the infotainment screen
•Distorted or unclear camera image
•Delayed camera activation when shifting into reverse
•No audible alerts or guidelines when reversing

Diagnostic Steps

1
Inspect the camera lens for dirt, debris, or damage.
2
Check the vehicle's infotainment system settings to ensure the camera is enabled.
3
Use an OBD-II scanner to check for any diagnostic trouble codes related to the camera system.
4
Examine the wiring harness and connectors for signs of wear, corrosion, or loose connections.
5
Verify the rearview camera fuse is intact and functioning.

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

Parts Required

•Rearview camera (if replacement is necessary)
•Fuses (if blown)

Related Faults

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Diagnostic Steps

1
Inspect the camera lens for dirt, debris, or damage.
2
Check the vehicle's infotainment system settings to ensure the camera is enabled.
3
Use an OBD-II scanner to check for any diagnostic trouble codes related to the camera system.
4
Examine the wiring harness and connectors for signs of wear, corrosion, or loose connections.
5
Verify the rearview camera fuse is intact and functioning.

Solution

1. Preparation

Tools Required: OBD-II scanner, multimeter, socket set, trim removal tools.
Safety Warnings: Disconnect the vehicle's battery before working on electrical systems to avoid shorts or shocks.

2. Inspect and Clean the Camera

Locate the rearview camera, typically mounted above the tailgate handle.
Use a soft cloth and appropriate cleaner to remove any dirt or debris from the camera lens.
Check for physical damage. If the lens is cracked, proceed to replace the camera.

3. Check Wiring and Connections

Use trim removal tools to access the wiring harness leading to the rearview camera and infotainment system.
Visually inspect the wiring for damage or corrosion.
Use a multimeter to test for continuity in the wiring.
Ensure all connectors are securely attached. Replicate any loose connections.

4. Test the Fuse

Locate the fuse box, usually found under the dashboard or in the engine compartment.
Identify the fuse associated with the rearview camera (refer to the owner’s manual for the correct fuse number).
Remove the fuse and inspect it; replace if blown.

5. Replace the Camera (if necessary)

If the camera is faulty, remove the mounting screws using a socket set.
Disconnect the camera from its wiring harness.
Install the new camera by reversing the removal steps.
Securely fasten the camera and reconnect the wiring.