B1424 2018 GMC Sierra Code - Control Module Power Circuit
Quick Answer
The B1424 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Control Module Power Circuit. Common causes include Damaged wiring or connectors in the control module power circuit, Faulty control module, Weak battery or alternator. 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 2018 GMC Sierra indicates Control Module Power Circuit.
- Common causes
- Common causes include Damaged wiring or connectors in the control module power circuit, Faulty control module, Weak battery or alternator.
- 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 B1424 2018 GMC Sierra Description
The B1424 diagnostic trouble code (DTC) for a 2018 GMC Sierra relates to the Control Module Power Circuit. This code indicates that there is an issue with the power circuit supplying the control module with the necessary voltage to operate properly. The control module is a crucial component in the vehicle's electronic system, responsible for managing various functions such as engine performance, transmission shifting, and emissions control.
Common Causes of B1424 2018 GMC Sierra
- Damaged wiring or connectors in the control module power circuit.
- Faulty control module.
- Weak battery or alternator.
- Issues with the vehicle's electrical system.
- Corrosion or moisture in the control module connections.
Symptoms of B1424 2018 GMC Sierra
- Engine performance issues such as rough idling or stalling.
- Vehicle not starting or difficulty starting.
- Warning lights illuminated on the dashboard.
- Transmission shifting problems.
- Poor fuel efficiency.
How to Fix B1424 2018 GMC Sierra
- Begin by conducting a thorough inspection of the control module power circuit, checking for any damaged wiring or connectors. Repair or replace any faulty components.
- Test the battery and alternator to ensure they are providing the correct voltage to the control module. Replace if necessary.
- Check the control module for any signs of damage or malfunction. Replace if needed.
- Clear the DTC and reset the control module to ensure the issue has been resolved.
- Perform a final test drive to confirm that the symptoms associated with the B1424 code have been eliminated.
Cost to Fix B1424 2018 GMC Sierra
The typical repair costs for addressing a B1424 code on a 2018 GMC Sierra can range from $200 to $600, including parts and labor. However, it's important to note that specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops charge between $80 and $150 per hour, but rates may be higher in metropolitan areas or at dealerships, while independent shops may charge less. It's recommended to inquire about local rates for a more accurate estimate.
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Frequently Asked Questions about B1424 2018 GMC Sierra Code
1. What does the OBDII code B1424 mean on a 2018 GMC Sierra?
The code B1424 indicates an issue with the Control Module Power Circuit, typically related to communication or power supply problems.
2. What are common symptoms of a B1424 code in a 2018 GMC Sierra?
Symptoms may include non-functional HVAC controls, inconsistent system operation, or warning lights on the dashboard.
3. What causes the B1424 code to trigger in a GMC Sierra?
Common causes include a blown fuse, damaged wiring, poor ground connections, or a faulty control module.
4. How do I diagnose the B1424 code on my 2018 GMC Sierra?
Start by checking the fuses, inspecting the wiring and connectors for damage, and verifying power and ground at the control module.
5. Can a weak battery cause the B1424 code on a GMC Sierra?
Yes, a weak or failing battery can cause voltage drops that may trigger the code.
6. What tools are needed to troubleshoot the B1424 code?
You’ll need an OBDII scanner, a multimeter to check voltage and continuity, and a wiring diagram for the vehicle.
7. Is it safe to drive a 2018 GMC Sierra with the B1424 code?
While it may not cause immediate safety concerns, the issue can affect system functionality and should be addressed promptly.
8. How do I fix the B1424 code on my 2018 GMC Sierra?
Repairs may include replacing blown fuses, repairing damaged wiring, cleaning corroded connectors, or replacing the faulty control module.
9. Can the B1424 code clear itself after fixing the issue?
In some cases, the code may clear after a proper repair, but it’s often necessary to reset it using an OBDII scanner.
10. How much does it cost to repair a B1424 code on a GMC Sierra?
Costs vary depending on the root cause; simple fixes like replacing a fuse may cost a few dollars, while control module replacement can cost several hundred dollars.
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