AutoCodes – GMC – B1480 GMC

B1480 GMC Code - Battery Rundown Protection Circuit

Quick Answer

The Body Control Module (BCM) supplies battery voltage to the front and rear reading lamps, left and right sunshade lamps, center console compartment lamp, and instrument panel compartment lamp via the courtesy lamp control circuit. Common causes include Faulty Lamp, Lamp harness is open or shorted, Lamp 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: B1480 GMC indicates Battery Rundown Protection Circuit.
Common causes: Common causes include Faulty Lamp, Lamp harness is open or shorted, Lamp 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.

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Code Popularity 8,918

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 Apr 20, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1480 GMC Description

The Body Control Module (BCM) supplies battery voltage to the front and rear reading lamps, left and right sunshade lamps, center console compartment lamp, and instrument panel compartment lamp via the courtesy lamp control circuit. When the instrument panel compartment, center console armrest, or sunshade mirror is opened, the switch contacts close allowing battery voltage to flow illuminating the respective lamps. The front and rear reading lamps are controlled by individual switches that are activated by the occupants when additional cabin lighting is required. In the event that any of these courtesy lamps were to remain illuminated for more than 10 min with the ignition switch in the OFF position, the BCM will deactivate the courtesy lamp control circuit to prevent total battery discharge. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a fault in the courtesy lamps control circuit.

OBDII Code B1480 GMC - Battery Rundown Protection Circuit - AutoCodes.com — B1480 GMC Code - Battery Rundown Protection Circuit

What does this mean?

What are the Possible Causes of the DTC B1480 GMC?

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

How to Fix the DTC B1480 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 B1480 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.

Need more information about the B1480 GMC code?

Need more information on how to fix the B1480 GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1480 GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

B1480 2014 GMC Sierra — Battery Rundown Protection Circuit
B1480 2015 GMC Sierra — Battery Rundown Protection Circuit
B1480 2016 GMC Sierra — Battery Rundown Protection Circuit
B1480 2017 GMC Sierra — Battery Rundown Protection Circuit
B1480 2018 GMC Sierra — Battery Rundown Protection Circuit

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 B1480 GMC Code

1. What are the common symptoms of OBDII code B1480 GMC (Battery Rundown Protection Circuit)?

- Common symptoms include a warning light on the dashboard, difficulty starting the vehicle, and issues with electrical components like power windows and door locks.

2. What can cause the OBDII code B1480 GMC to trigger?

- The code B1480 is typically triggered by a malfunction in the battery rundown protection circuit, which is designed to prevent excessive battery drain when the vehicle is turned off.

3. How can I diagnose the cause of the OBDII code B1480 GMC?

- To diagnose the cause of code B1480, a thorough inspection of the battery rundown protection circuit, including wiring, fuses, and the module itself, is recommended. A multimeter can also be used to test for continuity and proper voltage.

4. What are some repair tips for fixing the OBDII code B1480 GMC?

- Repair tips for code B1480 may include checking and replacing any blown fuses, repairing damaged wiring, ensuring proper connections, and, if needed, replacing the battery rundown protection module.

5. Can I drive my vehicle with the OBDII code B1480 GMC active?

- It is generally not recommended to drive the vehicle with code B1480 active, as it can lead to further electrical issues and potential draining of the battery. It is best to address the issue promptly.

6. How important is it to fix the OBDII code B1480 GMC promptly?

- It is important to address code B1480 promptly to prevent further damage to the electrical system, ensure proper functioning of the battery rundown protection circuit, and maintain the vehicle's overall performance.

7. What are the potential risks of ignoring the OBDII code B1480 GMC?

- Ignoring code B1480 can lead to a drained battery, potential damage to electrical components, and increased risk of being stranded due to the vehicle not starting.

8. Can a DIY enthusiast fix the OBDII code B1480 GMC at home?

- Depending on the individual's skill level and experience with automotive repairs, a DIY enthusiast may be able to diagnose and fix code B1480 at home by following repair guides and using the right tools.

9. How much does it typically cost to repair the OBDII code B1480 GMC at a professional mechanic or dealership?

- The cost of repairing code B1480 can vary depending on the extent of the issue, parts needed, and labor rates. It is recommended to obtain quotes from different mechanics or dealerships for an accurate estimate.

10. Is it possible for the OBDII code B1480 GMC to reoccur after being repaired?

- If the root cause of the issue is not properly addressed during the repair, there is a possibility for code B1480 to reoccur. It is important to ensure all related components are thoroughly inspected and repaired to prevent recurrence.