AutoCodesGMC – B1424 2014 GMC Sierra

B1424 2014 GMC Sierra Code - Control Module Power Circuit

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Low battery voltage, Faulty Control Module, Control Module harness is open or shorted. 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
B1424 2014 GMC Sierra indicates Control Module Power Circuit.
Common causes
Common causes include Low battery voltage, Faulty Control Module, Control Module harness is open or shorted.
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 209
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 11, 2022
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Code B1424 2014 GMC Sierra Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Damage to components, and incorrect data can occur when the voltage is out of range. The vehicle has multiple Control Modules that will set this Diagnostic Trouble Code (DTC).
OBDII Code B1424 2014 GMC Sierra - Control Module Power Circuit - AutoCodes.com
B1424 2014 GMC Sierra Code - Control Module Power Circuit

What are the Possible Causes of the DTC B1424 2014 GMC Sierra?

  • Low battery voltage
  • Faulty Control Module
  • Control Module harness is open or shorted
  • Control Module circuit poor electrical connection

How to Fix the DTC B1424 2014 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 B1424 2014 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 B1424 2014 GMC Sierra code?

Need more information on how to fix the B1424 2014 GMC Sierra code? Get Access to Factory Service Manuals

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 B1424 2014 GMC Sierra Code

1. What does the OBDII code B1424 mean on a 2014 GMC Sierra?

The B1424 code indicates an issue with the control module power circuit, often related to insufficient or interrupted power supply to a specific control module.

2. What are the common symptoms of B1424 in a 2014 GMC Sierra?

Symptoms may include malfunctioning electronic components, warning lights on the dashboard, or intermittent operation of systems like HVAC or infotainment.

3. What causes the B1424 code in a GMC Sierra?

Common causes include blown fuses, damaged wiring, poor ground connections, or a faulty control module.

4. Can a weak battery cause the B1424 code?

Yes, a weak or failing battery can lead to insufficient power delivery, triggering the B1424 code.

5. How do you diagnose the B1424 code in a 2014 GMC Sierra?

Diagnosis involves checking fuses, inspecting wiring for damage or corrosion, testing the battery and alternator, and verifying power and ground connections to the affected control module.

6. Which systems could be affected by the B1424 code?

Systems like HVAC, infotainment, or other electronic modules relying on the affected control circuit may be impacted.

7. What repairs are needed to fix the B1424 code?

Repairs may include replacing blown fuses, repairing damaged wiring, cleaning or securing ground connections, or replacing a faulty control module.

8. Is it safe to drive with the B1424 code active?

While the vehicle may still be drivable, essential systems like HVAC or safety features could malfunction, so it’s best to address the issue promptly.

9. How much does it cost to fix the B1424 code on a GMC Sierra?

Repair costs vary depending on the root cause, ranging from a simple fuse replacement (around $20) to control module replacement (which could exceed $500).

10. Can clearing the code fix the B1424 issue?

Clearing the code may temporarily turn off the warning, but the issue will recur unless the underlying problem is resolved.

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