B144B 2015 GMC Sierra Code - Run/Crank Power Relay Circuit
Quick Answer
The B144B diagnostic trouble code (DTC) on a 2015 GMC Sierra indicates a problem with the Run/Crank Power Relay Circuit. Common causes include Faulty run/crank power relay, Wiring harness issues, Loose or corroded electrical connections. 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
- B144B 2015 GMC Sierra indicates Run/Crank Power Relay Circuit.
- Common causes
- Common causes include Faulty run/crank power relay, Wiring harness issues, Loose or corroded electrical connections.
- 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.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
Code B144B 2015 GMC Sierra Description
The B144B diagnostic trouble code (DTC) on a 2015 GMC Sierra indicates a problem with the Run/Crank Power Relay Circuit. This code specifically points to an issue with the relay that controls the power supply to the vehicle's engine during starting and running. The relay is responsible for ensuring the proper distribution of power to various components that are essential for the engine to start and operate smoothly.
Common Causes of B144B 2015 GMC Sierra
- Faulty run/crank power relay
- Wiring harness issues
- Loose or corroded electrical connections
- Faulty ignition switch
- Electrical system malfunction
Symptoms of B144B 2015 GMC Sierra
- Engine cranks but does not start
- Intermittent stalling while driving
- Reduced engine power
- Check engine light illuminated
- Electrical issues such as flickering lights or malfunctioning accessories
How to Fix B144B 2015 GMC Sierra
- Begin by diagnosing the exact cause of the issue using a diagnostic scanner to pinpoint the specific component or wiring that is causing the problem.
- Inspect the run/crank power relay and test it for proper functionality. Replace the relay if it is found to be faulty.
- Check the wiring harness for any damage or loose connections. Repair or replace any damaged wiring.
- Inspect the ignition switch for any faults and replace it if necessary.
- Clear the DTC and test the vehicle to ensure that the issue has been resolved.
Cost to Fix B144B 2015 GMC Sierra
The cost of repairing a run/crank power relay circuit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. On average, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. Overall, the total cost of repairing this issue can be in the range of $150 to $500. However, it is important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the shop's labor rates. It is recommended to obtain quotes from local auto repair shops for a more accurate estimate.
Need more information about the B144B 2015 GMC Sierra code?
Need more information on how to fix the B144B 2015 GMC Sierra code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B144B 2015 GMC Sierra code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B144B 2015 GMC Sierra Code
1. What does the OBDII code B144B mean on a 2015 GMC Sierra?
B144B indicates an issue with the Run/Crank Power Relay Circuit, which is responsible for providing power during engine startup and operation.
2. What are the symptoms of a B144B code on a 2015 GMC Sierra?
Common symptoms include difficulty starting the engine, intermittent stalling, or the vehicle not starting at all.
3. What causes the B144B code to appear?
The code can be triggered by a faulty Run/Crank Power Relay, damaged wiring or connectors in the circuit, or issues with the body control module (BCM).
4. How is the B144B code diagnosed?
Technicians typically inspect the relay, wiring, and connectors for damage or corrosion, use a multimeter to check circuit continuity, and may test the BCM for proper function.
5. Can I still drive my 2015 GMC Sierra with a B144B code?
It’s not recommended, as the vehicle may stall or fail to start, leaving you stranded. Immediate diagnosis and repair are advised.
6. How do I fix the B144B code on my 2015 GMC Sierra?
Repairs may involve replacing the Run/Crank Power Relay, repairing damaged wiring or connectors, or reprogramming or replacing the BCM if it’s determined to be faulty.
7. Where is the Run/Crank Power Relay located on a 2015 GMC Sierra?
The relay is typically located in the under-hood fuse box or relay panel. Consult your owner’s manual for the exact location.
8. What tools are needed to troubleshoot a B144B code?
You’ll need a multimeter, a scan tool capable of reading body control module codes, and potentially wiring diagrams for the Run/Crank Power Relay Circuit.
9. How much does it cost to repair the B144B code on a 2015 GMC Sierra?
Repair costs can range from $50 to $300, depending on whether the issue is a simple relay replacement or involves more extensive wiring or BCM repairs.
10. Can a dead battery cause the B144B code to appear?
A weak or dead battery can contribute to electrical issues, but the code specifically points to a fault in the Run/Crank Power Relay Circuit, which should be inspected for other underlying problems.
Discuss the causes and fixes for B144B 2015 GMC Sierra OBDII Code
Code B144B 2015 GMC Sierra comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.