AutoCodes – GMC – B2476 2015 GMC Sierra

B2476 2015 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 2015 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.

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Code Popularity 209

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 01, 2023

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B2476 2015 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 2015 GMC Sierra - Cellular Phone Select Service Switch - AutoCodes.com — B2476 2015 GMC Sierra Code - Cellular Phone Select Service Switch

What does this mean?

What are the Possible Causes of the DTC B2476 2015 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 2015 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.

What does this mean?

Code Tech Notes

B2476:04 Cellular Phone Select Service Switch Open
B2476:59 Cellular Phone Select Service Switch Protection Time-out

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B2476 2015 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 2015 GMC Sierra code?

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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 2015 GMC Sierra Code

1. What does OBDII code B2476 on a 2015 GMC Sierra indicate?

This code B2476 indicates a problem with the Cellular Phone Select Service Switch in the vehicle.

2. What are the common symptoms of OBDII code B2476 in a 2015 GMC Sierra?

Common symptoms include issues with the vehicle's cellular phone connectivity, such as difficulty pairing phones or loss of service.

3. What are the possible causes of OBDII code B2476 in a 2015 GMC Sierra?

Possible causes of this code include a faulty Cellular Phone Select Service Switch, wiring issues, or a problem with the vehicle's communication network.

4. How can I diagnose the cause of OBDII code B2476 in my 2015 GMC Sierra?

Diagnosing this code may involve checking the wiring connections to the Cellular Phone Select Service Switch, testing the switch itself, and verifying the vehicle's communication network.

5. Can I still drive my 2015 GMC Sierra with OBDII code B2476 present?

In most cases, it is safe to drive the vehicle with this code present, but it is recommended to address the issue promptly to avoid potential connectivity problems.

6. How can I repair OBDII code B2476 in my 2015 GMC Sierra?

Repairing this code may involve replacing the faulty Cellular Phone Select Service Switch, repairing any damaged wiring, or addressing issues with the communication network.

7. Can I reset OBDII code B2476 in my 2015 GMC Sierra myself?

Yes, you can reset the code using an OBDII scanner or by disconnecting the vehicle's battery for a few minutes. However, it is important to address the underlying issue to prevent the code from reappearing.

8. Are there any DIY tips for fixing OBDII code B2476 in a 2015 GMC Sierra?

DIY tips may include checking and securing wiring connections, ensuring the Cellular Phone Select Service Switch is functioning properly, and resetting the code to see if it reappears.

9. Will OBDII code B2476 in my 2015 GMC Sierra affect the vehicle's performance?

Typically, this code is related to the cellular phone connectivity and should not significantly impact the vehicle's overall performance or drivability.

10. How can I prevent OBDII code B2476 from occurring in my 2015 GMC Sierra in the future?

Regularly checking the cellular phone system components, ensuring proper wiring connections, and addressing any connectivity issues promptly can help prevent the recurrence of this code.