AutoCodes – GMC – B3055 2015 GMC Sierra

B3055 2015 GMC Sierra Code - No Transponder Modulation or No Transponder

Quick Answer

When a keyless entry transmitter is inserted into the transmitter pocket/slot and the ignition mode switch is pressed, the transponder embedded in the transmitter is energized by the immobilizer antenna exciter coil. Common causes include Faulty Key, Faulty Immobilizer Control Module. 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: B3055 2015 GMC Sierra indicates No Transponder Modulation or No Transponder.
Common causes: Common causes include Faulty Key, Faulty Immobilizer Control Module.
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 343

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 Jun 08, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3055 2015 GMC Sierra Description

When a keyless entry transmitter is inserted into the transmitter pocket/slot and the ignition mode switch is pressed, the transponder embedded in the transmitter is energized by the immobilizer antenna exciter coil. The transponder transmits a signal to the immobilizer control module. The immobilizer control module translates this signal to a serial data message which is sent to the Body Control Module (BCM). The BCM then compares this value to a value stored in memory. If the value is correct, the BCM will send the prerelease password via the serial data circuit to the Engine Control Module (ECM). If the learned key code does not match or a transponder value is not received, the BCM will send the start disable password to the ECM. The Diagnostic Trouble Code (DTC) will be set when the BCM is unable to measure the ignition key/transmitter transponder value.

OBDII Code B3055 2015 GMC Sierra - No Transponder Modulation or No Transponder - AutoCodes.com — B3055 2015 GMC Sierra Code - No Transponder Modulation or No Transponder

What does this mean?

What are the Possible Causes of the DTC B3055 2015 GMC Sierra?

Faulty Key
Faulty Immobilizer Control Module

How to Fix the DTC B3055 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 is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3055 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 B3055 2015 GMC Sierra code?

Need more information on how to fix the B3055 2015 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 B3055 2015 GMC Sierra Code

1. What are the common symptoms of OBDII code B3055 in a 2015 GMC Sierra?

The common symptoms include issues with starting the vehicle, the engine not turning over, or the vehicle going into a security lockout mode.

2. What does "No Transponder Modulation" or "No Transponder" mean in relation to the B3055 code?

This code indicates a problem with the communication between the vehicle's transponder and the ignition system.

3. What are the possible causes of the B3055 code in a 2015 GMC Sierra?

Possible causes include a faulty transponder key, a defective ignition switch, wiring issues, or a malfunctioning immobilizer system.

4. How can I diagnose the B3055 code in my 2015 GMC Sierra?

Diagnosing the B3055 code typically involves checking the transponder key, testing the ignition switch, inspecting the wiring for any damage, and scanning the vehicle's computer for related error codes.

5. Can I still drive my GMC Sierra with the B3055 code present?

It is not recommended to drive the vehicle with the B3055 code present as it may lead to starting issues or the vehicle going into a security lockout mode.

6. How can I repair the No Transponder Modulation issue in my GMC Sierra?

Repairing the issue may involve replacing the transponder key, fixing any wiring problems, replacing the ignition switch, or reprogramming the vehicle's immobilizer system.

7. Is it possible to reset the B3055 code in a 2015 GMC Sierra?

Resetting the B3055 code may be possible by fixing the underlying issue causing the code to appear or by using a diagnostic tool to clear the code from the vehicle's computer.

8. Can a DIY enthusiast fix the B3055 code issue in a GMC Sierra?

While some basic troubleshooting steps can be taken by a DIY enthusiast, fixing the B3055 code may require specialized tools and expertise, so it is recommended to seek professional help.

9. How much does it cost to repair the B3055 code in a 2015 GMC Sierra?

The cost of repairing the B3055 code can vary depending on the cause of the issue and the specific repairs needed. It is advisable to get a diagnosis from a mechanic to determine the exact cost.

10. How can I prevent the B3055 code from appearing in my 2015 GMC Sierra in the future?

To prevent the B3055 code from reoccurring, make sure to use a properly functioning transponder key, maintain the ignition system, and address any wiring issues promptly. Regular maintenance can also help prevent this code from appearing.