how to fix GMC Sierra T1XX (2019-Present) radio not turning on

GMC Sierra T1XX (2019-Present)

Error Codes

1-3 hours

Time

medium

Difficulty

medium

Severity

3 min read

551 words

Problem Statement

Learn how to diagnose and fix the radio not turning on in GMC Sierra T1XX (2019-Present). Step-by-step guide with diagnostic procedures and repair instructions.

Affected Component

Electrical

Estimated Time

1-3 hours

⚠️ Safety Warnings

Important safety information - read before proceeding

•Disconnect battery before working on electrical systems to avoid shock and damage.
•Allow components to cool before handling if the vehicle has been running.

Symptoms

•Radio display remains dark and unresponsive
•No sound output from speakers
•No response to any buttons or controls
•Error messages displayed on the infotainment screen (if applicable)
•Bluetooth connectivity issues

Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to ensure it is charged.
2
Verify if the fuse for the radio is blown by inspecting the fuse box.
3
Inspect the wiring harness and connections to the radio for any loose or damaged wires.
4
Perform a reset of the infotainment system by disconnecting the battery for a few minutes.
5
Use an OBD-II scanner to check for any related error codes that may indicate problems with the electrical 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

•Multimeter
•Fuse puller
•Trim removal tool
•Socket set
•Screwdriver set

Parts Required

•Replacement radio fuse (if necessary)
•New radio unit (if replacement is needed)

Related Faults

Share this solution

Comments

No comments yet

Be the first to share your thoughts

Back to Generation

Diagnostic Steps

1
Check the vehicle's battery voltage using a multimeter to ensure it is charged.
2
Verify if the fuse for the radio is blown by inspecting the fuse box.
3
Inspect the wiring harness and connections to the radio for any loose or damaged wires.
4
Perform a reset of the infotainment system by disconnecting the battery for a few minutes.
5
Use an OBD-II scanner to check for any related error codes that may indicate problems with the electrical system.

Solution

1. Preparation

Gather necessary tools and parts.
Ensure the vehicle is parked on a flat surface, and the ignition is turned off.
Disconnect the negative terminal of the battery to prevent electrical shock.

2. Check and Replace Fuse

Locate the fuse box, typically found under the dashboard or in the engine compartment.
Identify the radio fuse using the fuse diagram on the cover.
Remove the fuse using a fuse puller or pliers.
Inspect the fuse for continuity; if blown, replace it with a new fuse of the same amperage rating.

3. Inspect Wiring Connections

Reconnect the negative battery terminal.
Remove the radio unit from the dashboard (may require a trim removal tool).
Inspect the wiring harness connected to the radio for any signs of damage or corrosion.
Ensure all connectors are securely fastened; repair or replace any damaged wiring as needed.

4. Reset Infotainment System

With the radio unit still accessible, disconnect the battery again.
Wait for at least 5 minutes before reconnecting the negative terminal.
Turn on the ignition and check if the radio powers on.

5. Replace Radio Unit (if necessary)

If the radio still does not function, it may be defective.
Remove the radio unit from the dashboard by following the manufacturer’s removal procedures.
Install the new radio unit by reversing the removal steps, ensuring all connections are secure.