AutoCodes – Chevrolet – B3055 Chevrolet

B3055 Chevrolet 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 Chevrolet 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 36,998

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
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B3055 Chevrolet 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 Chevrolet - No Transponder Modulation or No Transponder - AutoCodes.com — B3055 Chevrolet Code - No Transponder Modulation or No Transponder

What does this mean?

What are the Possible Causes of the DTC B3055 Chevrolet?

Faulty Key
Faulty Immobilizer Control Module

How to Fix the DTC B3055 Chevrolet?

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

User Submitted Video

There is a Factory Service Bulletin for some vehicles with no crank and with the B3055 code: If the vehicle will not crank, remove the key and make sure it is fully extended. Reinsert the ignition key in the extended straight-out position and turn to crank the engine. Note: This condition can set DTC B3055 (No Transponder or Modulation) in history. Clear the B3055 from history and recheck keys that are learned to verify keys are operating correctly.

Buick, Chevrolet, GM Vehicles Factory Service Bulletin OBDII Code B3055

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B3055 Chevrolet 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 Chevrolet code?

Need more information on how to fix the B3055 Chevrolet code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3055 Chevrolet code diagnosed by a professional: Find a repair shop in your area

Information for Specific Chevrolet Models

B3055 2014 Chevrolet Silverado — No Transponder Modulation or No Transponder
B3055 2015 Chevrolet Silverado — No Transponder Modulation or No Transponder
B3055 2016 Chevrolet Silverado — No Transponder Modulation or No Transponder
B3055 2017 Chevrolet Silverado — No Transponder Modulation or No Transponder
B3055 2018 Chevrolet Silverado — No Transponder Modulation or No Transponder

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 Chevrolet Code

1. What are the common symptoms of OBDII code B3055 for Chevrolet?

- Common symptoms include the engine not starting, the security light staying on, or the vehicle going into "lockout" mode.

2. What does the OBDII code B3055 "No Transponder Modulation" mean for a Chevrolet vehicle?

- This code indicates that the vehicle's key transponder is not communicating properly with the immobilizer system.

3. What are the possible causes of OBDII code B3055 in a Chevrolet?

- The code may be triggered by a faulty key transponder, a damaged immobilizer system, wiring issues, or a weak car battery.

4. How can I diagnose OBDII code B3055 in my Chevrolet?

- A professional diagnostic scan tool can help pinpoint the issue by reading the specific error codes and providing data on the key transponder and immobilizer system.

5. Can I repair OBDII code B3055 in my Chevrolet myself?

- Depending on the cause, some DIY repairs may be possible, such as checking and replacing the key transponder battery or repairing damaged wiring. However, complex issues may require professional assistance.

6. Is it safe to continue driving with OBDII code B3055 in my Chevrolet?

- It is not recommended to drive the vehicle with this code active, as it may lead to starting issues or the vehicle being immobilized.

7. How much does it typically cost to repair OBDII code B3055 in a Chevrolet?

- Repair costs can vary depending on the underlying cause and the extent of the issue. Costs may range from a simple key transponder replacement to a more involved immobilizer system repair.

8. Can a locksmith help with OBDII code B3055 in my Chevrolet?

- Yes, a locksmith experienced with automotive transponder keys may be able to assist in diagnosing and resolving issues related to the key transponder.

9. How long does it usually take to repair OBDII code B3055 in a Chevrolet?

- The repair time can vary based on the complexity of the issue. Simple fixes like replacing a key transponder battery may take a short time, while more intricate repairs could require more extensive troubleshooting.

10. Are there preventive measures to avoid OBDII code B3055 in my Chevrolet?

- Regularly checking the condition of your key transponder, maintaining the car battery, and addressing any warning signs promptly can help prevent issues that trigger this code.