AutoCodesGMC – B101D 2014 GMC Sierra

B101D 2014 GMC Sierra Code - Electronic Control Unit Hardware

Quick Answer

Internal fault detection is handled inside the device. Common causes include Faulty Electronic Control Unit, Electronic Control Unit harness is open or shorted, Electronic Control Unit 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
B101D 2014 GMC Sierra indicates Electronic Control Unit Hardware.
Common causes
Common causes include Faulty Electronic Control Unit, Electronic Control Unit harness is open or shorted, Electronic Control Unit 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 374
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Apr 06, 2023
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Code B101D 2014 GMC Sierra Description

Internal fault detection is handled inside the device. The symptom byte information is for engineering reference only. No external circuit diagnosis is involved. The Diagnostic Trouble Code (DTC) will be set when the device has detected an internal malfunction. This DTC will affect only the device to which the code is set. Do not replace a device based only on DTC B101D being set in history except for the Inflatable Restraint Sensing and Diagnostic Module (SDM) and the Passenger Presence Module. If the DTC B101D is set as current, replace the appropriate device.
OBDII Code B101D 2014 GMC Sierra - Electronic Control Unit Hardware - AutoCodes.com
B101D 2014 GMC Sierra Code - Electronic Control Unit Hardware

What are the Possible Causes of the DTC B101D 2014 GMC Sierra?

  • Faulty Electronic Control Unit
  • Electronic Control Unit harness is open or shorted
  • Electronic Control Unit circuit poor electrical connection

How to Fix the DTC B101D 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.

Code Tech Notes

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B101D 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 B101D 2014 GMC Sierra code?

Need more information on how to fix the B101D 2014 GMC Sierra code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B101D 2014 GMC Sierra code diagnosed by a professional: Find a repair shop in your area

Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service

  • Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
  • Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
  • Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
  • Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.

Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.

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 B101D 2014 GMC Sierra Code

What does OBDII code B101D mean for a 2014 GMC Sierra?

OBDII code B101D indicates a malfunction related to the Electronic Control Unit (ECU) hardware, which may affect vehicle controls and systems.

What are common symptoms associated with the B101D code?

Symptoms may include warning lights on the dashboard, issues with vehicle performance, and problems with electronic features like windows or locks.

What could cause the B101D code to trigger?

Possible causes include a faulty ECU, poor electrical connections, damaged wiring, or issues with related sensors.

How can I diagnose the B101D code?

To diagnose, use an OBDII scanner to confirm the code, visually inspect the wiring and connections, and check related modules for faults.

Is it safe to drive with the B101D code present?

While it may be safe to drive, the vehicle may exhibit erratic behavior or performance issues, so it's advisable to address the code promptly.

What repairs are commonly needed to fix the B101D code?

Repairs may involve replacing the ECU, repairing wiring or connectors, or reprogramming the ECU if it is software-related.

Can I clear the B101D code and see if it returns?

Yes, you can clear the code using an OBDII scanner, but if the underlying issue is not resolved, the code is likely to return.

How much might it cost to repair a B101D code issue?

Repair costs can vary widely, from a simple wiring fix to several hundred dollars for an ECU replacement, depending on the specific problem.

Are there any preventative measures to avoid B101D code issues?

Regular vehicle maintenance, checking electrical connections, and addressing any signs of electrical problems early can help prevent B101D code occurrences.

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