AutoCodesGMC – B2476 2014 GMC Sierra

B2476 2014 GMC Sierra Code - Cellular Phone Select Service Switch

Quick Answer

The OnStar® button assembly consists of 3 buttons: Call/Answer, OnStar® Call Center, and OnStar® Emergency. Common causes include Faulty Inside Rearview Mirror, Inside Rearview Mirror harness is open or shorted, Inside Rearview Mirror circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
B2476 2014 GMC Sierra indicates Cellular Phone Select Service Switch.
Common causes
Common causes include Faulty Inside Rearview Mirror, Inside Rearview Mirror harness is open or shorted, Inside Rearview Mirror circuit poor electrical connection.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 195
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on May 01, 2023
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Code B2476 2014 GMC Sierra Description

The OnStar® button assembly consists of 3 buttons: Call/Answer, OnStar® Call Center, and OnStar® Emergency. The Telematics Communication Interface Control Module supplies the OnStar® button assembly with 10 V via the 10 V reference circuit. When pressed, each button completes the circuit across a resistor or set of resistors allowing a specific voltage to be returned to the Telematics Communication Interface Control Module over the signal circuit. Depending upon the voltage range returned, the Telematics Communication Interface Control Module is able to identify which button has been pressed. The Diagnostic Trouble Code (DTC) will be set when the Telematics Communication Interface Control Module detects a failure on the 10 V reference circuit.
OBDII Code B2476 2014 GMC Sierra - Cellular Phone Select Service Switch - AutoCodes.com
B2476 2014 GMC Sierra Code - Cellular Phone Select Service Switch

What are the Possible Causes of the DTC B2476 2014 GMC Sierra?

  • Faulty Inside Rearview Mirror
  • Inside Rearview Mirror harness is open or shorted
  • Inside Rearview Mirror circuit poor electrical connection
  • Faulty Telematics Communication Interface Control Module

How to Fix the DTC B2476 2014 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2476 2014 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B2476 2014 GMC Sierra code?

Need more information on how to fix the B2476 2014 GMC Sierra code? Get Access to Factory Service Manuals

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B2476 2014 GMC Sierra Code

1. What does the OBDII code B2476 mean for a 2014 GMC Sierra?

The code B2476 indicates an issue with the Cellular Phone Select Service Switch, which is part of the vehicle's communication system.

2. What are the common symptoms of code B2476 in a 2014 GMC Sierra?

Symptoms may include the inability to connect to cellular services, issues with hands-free calling, or problems with OnStar functionality.

3. What causes the B2476 code to appear in a 2014 GMC Sierra?

Common causes include a faulty Cellular Phone Select Service Switch, wiring issues, or a malfunction in the vehicle’s communication module.

4. How can I diagnose the B2476 code in my 2014 GMC Sierra?

You can diagnose the code by checking for wiring or connector problems near the switch, scanning for related codes, and inspecting the communication module for faults.

5. Can the B2476 code affect other systems in the vehicle?

Yes, it may impact features like OnStar, Bluetooth connectivity, or hands-free calling functionality.

6. How do I fix the B2476 code on a 2014 GMC Sierra?

Repairs typically involve inspecting and replacing the Cellular Phone Select Service Switch, fixing damaged wiring, or updating the vehicle’s software.

7. Is the B2476 code a serious issue for a 2014 GMC Sierra?

While it doesn’t affect the drivability of the vehicle, it can interfere with communication and safety features like OnStar.

8. Can I clear the B2476 code without making repairs?

Clearing the code without addressing the underlying issue may result in the code reappearing and continued communication system problems.

9. How much does it cost to repair the B2476 code on a 2014 GMC Sierra?

Repair costs vary depending on whether the issue is with the switch, wiring, or module, but typically range from $100 to $500 for parts and labor.

10. Can a software update resolve the B2476 code in a 2014 GMC Sierra?

In some cases, a software update for the communication system may resolve the issue if it’s related to outdated firmware.

Discuss the causes and fixes for B2476 2014 GMC Sierra OBDII Code

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