AutoCodes – GMC – B144A GMC

B144A GMC Code - Run Power Relay Circuit

Quick Answer

The Body Control Module (BCM) feeds the ignition circuit by applying voltage when the ignition is in the ON position. Common causes include Faulty Ignition Main Relay, Ignition Main Relay harness is open or shorted, Ignition Main Relay 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: B144A GMC indicates Run Power Relay Circuit.
Common causes: Common causes include Faulty Ignition Main Relay, Ignition Main Relay harness is open or shorted, Ignition Main Relay 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 946

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 19, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B144A GMC Description

The Body Control Module (BCM) feeds the ignition circuit by applying voltage when the ignition is in the ON position. The Diagnostic Trouble Code (DTC) will be set when the BCM detects a fault in the ignition run relay coil control circuit.

OBDII Code B144A GMC - Run Power Relay Circuit - AutoCodes.com — B144A GMC Code - Run Power Relay Circuit

What does this mean?

What are the Possible Causes of the DTC B144A GMC?

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

How to Fix the DTC B144A 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 B144A 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 B144A GMC code?

Need more information on how to fix the B144A GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B144A GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

B144A 2014 GMC Sierra — Run Power Relay Circuit
B144A 2015 GMC Sierra — Run Power Relay Circuit
B144A 2016 GMC Sierra — Run Power Relay Circuit
B144A 2017 GMC Sierra — Run Power Relay Circuit
B144A 2018 GMC Sierra — Run Power Relay 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 B144A GMC Code

1. What are common symptoms of the OBDII code B144A in a GMC related to the Run Power Relay Circuit?

- Common symptoms include engine stalling, difficulty starting the vehicle, and intermittent power loss.

2. What typically causes the B144A GMC code related to the Run Power Relay Circuit?

- The code is often triggered by a faulty run power relay, damaged wiring, or a malfunctioning powertrain control module (PCM).

3. How can I diagnose the B144A code in my GMC vehicle?

- Use a diagnostic scanner to retrieve the trouble code and inspect the run power relay, wiring connections, and PCM for any visible damage or issues.

4. Is it safe to continue driving with the B144A trouble code present in my GMC?

- It is not recommended to drive the vehicle with this code as it can lead to potential safety hazards like sudden loss of power while driving.

5. What are some repair tips for addressing the B144A GMC code related to the Run Power Relay Circuit?

- Start by checking and replacing the run power relay if necessary, then inspect and repair any damaged wiring or connectors in the circuit.

6. Can I reset the B144A code in my GMC without fixing the underlying issue?

- While you can clear the code temporarily, it is crucial to address the root cause to prevent the issue from recurring and potentially causing further damage.

7. How much does it typically cost to repair the B144A GMC code associated with the Run Power Relay Circuit?

- The cost of repairs can vary depending on the exact cause of the issue, but expect to pay anywhere from $100 to $300 for parts and labor.

8. Are there any preventative maintenance steps I can take to avoid encountering the B144A trouble code in my GMC?

- Regularly inspecting and maintaining the electrical components in your vehicle can help prevent issues like the B144A code from occurring.

9. Will the B144A code in my GMC cause any damage to other vehicle systems if left untreated?

- Ignoring the B144A code can potentially lead to further electrical issues or damage to the powertrain components, so it is best to address it promptly.

10. Can a DIY enthusiast with basic automotive knowledge fix the B144A GMC code related to the Run Power Relay Circuit?

- While some may be able to address the issue themselves, it is recommended to consult a professional mechanic for proper diagnosis and repair to ensure safety and effectiveness.