AutoCodes – GMC – B2550 GMC

B2550 GMC Code - Backup Lamps Control Circuit

Quick Answer

When the Body Control Module (BCM) receives a signal requesting to illuminate the backup lamps, the battery voltage is sent directly from the BCM through the backup lamp supply voltage circuit to the backup lamps. Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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
B2550 GMC indicates Backup Lamps Control Circuit.
Common causes
Common causes include Faulty Body Control Module (BCM), Body Control Module (BCM) harness is open or shorted, Body Control Module (BCM) 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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 2,438
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Dec 26, 2019
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Code B2550 GMC Description

When the Body Control Module (BCM) receives a signal requesting to illuminate the backup lamps, the battery voltage is sent directly from the BCM through the backup lamp supply voltage circuit to the backup lamps. Voltage for the backup lamp supply voltage circuit as well as the courtesy lamp supply voltage circuit directly through the BCM to these circuits.
OBDII Code B2550 GMC - Backup Lamps Control Circuit - AutoCodes.com
B2550 GMC Code - Backup Lamps Control Circuit

What are the Possible Causes of the DTC B2550 GMC?

  • Faulty Body Control Module (BCM)
  • Body Control Module (BCM) harness is open or shorted
  • Body Control Module (BCM) circuit poor electrical connection

How to Fix the DTC B2550 GMC?

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 B2550 GMC 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.

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Need Help with the 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 B2550 GMC Code

1. What are the common symptoms of OBDII code B2550 GMC related to Backup Lamps Control Circuit?

- The common symptoms include non-functional backup lights, intermittent operation of the backup lights, or a dashboard warning light indicating an issue.

2. What are the possible causes of OBDII code B2550 GMC for Backup Lamps Control Circuit?

- The code may be triggered by issues such as a faulty backup lamp switch, damaged wiring or connectors in the circuit, a blown fuse, or a malfunctioning body control module.

3. How can I diagnose the cause of OBDII code B2550 GMC for Backup Lamps Control Circuit?

- You can use a diagnostic scanner to retrieve the error code and perform a visual inspection of the wiring and connectors. Additionally, checking the backup lamp switch and related components can help pinpoint the issue.

4. What repair tips can help resolve OBDII code B2550 GMC for Backup Lamps Control Circuit?

- Repair tips include checking and replacing blown fuses, repairing or replacing damaged wiring or connectors, testing and replacing the backup lamp switch if faulty, and resetting the error code after repairs are completed.

5. Can I drive my vehicle with OBDII code B2550 GMC related to Backup Lamps Control Circuit?

- It is generally safe to drive the vehicle with this code, but it is important to address the underlying issue promptly to ensure proper operation of the backup lights for safety reasons.

6. How much does it typically cost to repair OBDII code B2550 GMC for Backup Lamps Control Circuit?

- The cost of repair can vary depending on the specific cause of the issue. Simple fixes like replacing a blown fuse may be inexpensive, while more complex repairs involving components like the body control module can be more costly.

7. Are there any preventive measures to avoid OBDII code B2550 GMC for Backup Lamps Control Circuit?

- Regularly checking the functionality of backup lights, maintaining the vehicle's electrical system, and addressing any issues promptly can help prevent the occurrence of this OBDII code.

8. How long does it usually take to repair OBDII code B2550 GMC for Backup Lamps Control Circuit?

- The repair time can vary based on the cause of the issue and the extent of the repair needed. Simple repairs may take a short amount of time, while more complex issues may require more extensive diagnostic work and repairs.

9. Can a DIY enthusiast fix OBDII code B2550 GMC related to Backup Lamps Control Circuit?

- Depending on the individual's skill level and access to tools, some DIY enthusiasts may be able to diagnose and repair simpler causes of this OBDII code, such as replacing a blown fuse or a faulty backup lamp switch.

10. Is it necessary to clear the OBDII code B2550 GMC after repairing the Backup Lamps Control Circuit issue?

- Yes, it is essential to clear the error code using a diagnostic scanner after repairing the Backup Lamps Control Circuit issue to reset the system and ensure that the problem has been successfully resolved.

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