AutoCodes – GMC – B3055 2016 GMC Sierra

B3055 2016 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 2016 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 265

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 2016 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 2016 GMC Sierra - No Transponder Modulation or No Transponder - AutoCodes.com — B3055 2016 GMC Sierra Code - No Transponder Modulation or No Transponder

What does this mean?

What are the Possible Causes of the DTC B3055 2016 GMC Sierra?

Faulty Key
Faulty Immobilizer Control Module

How to Fix the DTC B3055 2016 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 2016 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 2016 GMC Sierra code?

Need more information on how to fix the B3055 2016 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 2016 GMC Sierra Code

1. What does the OBDII code B3055 mean on a 2016 GMC Sierra?

The B3055 code indicates a "No Transponder Modulation" or "No Transponder" issue, meaning the vehicle's immobilizer system cannot detect or communicate with the transponder in the key.

2. What are common symptoms of the B3055 code in a GMC Sierra?

Common symptoms include the engine not starting, the security light staying illuminated or flashing, and the vehicle failing to recognize the key.

3. What causes the B3055 code to appear on a 2016 GMC Sierra?

Causes may include a faulty key transponder, a damaged ignition key, issues with the immobilizer antenna, a malfunctioning Body Control Module (BCM), or interference from other electronic devices.

4. Can a low key fob battery trigger the B3055 code?

Yes, a weak or dead key fob battery can prevent the transponder signal from being detected, potentially triggering the B3055 code.

5. How do you fix the B3055 code on a 2016 GMC Sierra?

Repairs may involve replacing the key fob battery, reprogramming the key, inspecting and repairing the immobilizer antenna, or diagnosing and replacing the BCM if necessary.

6. Can the B3055 code be caused by a damaged key?

Yes, a physically damaged or improperly programmed key can prevent the transponder signal from being transmitted, leading to the B3055 code.

7. How can you test if the keyâ€™s transponder is working on a 2016 GMC Sierra?

You can test the key by using a spare programmed key. If the spare key starts the vehicle, the issue is likely with the original key or its transponder.

8. Does the B3055 code require professional diagnosis?

While some basic checks (like replacing the key fob battery) can be done at home, a professional diagnostic tool is often needed to pinpoint the exact cause and reprogram the system if required.

9. Can interference from other electronics cause the B3055 code?

Yes, strong electronic signals or devices near the key or ignition can interfere with the transponder signal, potentially resulting in the B3055 code.

10. Is reprogramming the key always necessary to resolve the B3055 code?

Not always. Reprogramming is only needed if the key or immobilizer system has lost synchronization. Other fixes, like replacing a faulty component, may resolve the issue without reprogramming.