AutoCodes – GMC – B3055 2018 GMC Sierra

B3055 2018 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 2018 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 368

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 2018 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 2018 GMC Sierra - No Transponder Modulation or No Transponder - AutoCodes.com — B3055 2018 GMC Sierra Code - No Transponder Modulation or No Transponder

What does this mean?

What are the Possible Causes of the DTC B3055 2018 GMC Sierra?

Faulty Key
Faulty Immobilizer Control Module

How to Fix the DTC B3055 2018 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 2018 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 2018 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 B3055 2018 GMC Sierra Code

1. What are the common symptoms of OBDII code B3055 in a 2018 GMC Sierra?

- The common symptoms include the vehicle not starting, the security light staying on, and issues with the vehicle's anti-theft system.

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

- This code indicates a problem with the vehicle's immobilizer system, specifically the modulation of the transponder signal.

3. What are some possible causes of OBDII code B3055 in a 2018 GMC Sierra?

- Possible causes include a faulty transponder key, a problem with the immobilizer system, issues with the key reader, or a wiring problem.

4. How can I diagnose the cause of OBDII code B3055 in my 2018 GMC Sierra?

- A diagnostic scan tool can help identify the specific issue causing the code. Checking the transponder key, key reader, and immobilizer system for faults is recommended.

5. Can I still drive my 2018 GMC Sierra with OBDII code B3055 present?

- It is not advisable to drive the vehicle with this code present, as it may lead to starting issues or potential security system malfunctions.

6. Is it possible to reset OBDII code B3055 in a 2018 GMC Sierra myself?

- While you can attempt to clear the code with a diagnostic scan tool, it is crucial to address the underlying issue causing the code to prevent it from reoccurring.

7. How can I repair OBDII code B3055 in my 2018 GMC Sierra?

- Repairing this code may involve replacing a faulty transponder key, repairing the immobilizer system, fixing wiring issues, or recalibrating the key reader.

8. Will disconnecting the battery reset OBDII code B3055 in my 2018 GMC Sierra?

- Disconnecting the battery may temporarily clear the code, but it is essential to diagnose and address the root cause of the issue to prevent the code from returning.

9. Can a locksmith help with OBDII code B3055 in a 2018 GMC Sierra?

- Yes, a locksmith specializing in automotive security systems can assist with diagnosing and repairing issues related to the transponder key, key reader, or immobilizer system.

10. How much can I expect to pay to repair OBDII code B3055 in my 2018 GMC Sierra?

- The cost of repairing this code can vary depending on the specific issue causing it. It is recommended to obtain diagnostic information from a qualified technician to determine the exact cost.