B101D 2016 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 2016 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.
Code B101D 2016 GMC Sierra Description
What are the Possible Causes of the DTC B101D 2016 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 2016 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
B101D:F0 set in the BCM after a dead battery event. The rare condition that sets B101D:F0 is an extremely dead battery case. It is NOT the cause of the dead battery, but the extremely low voltage is a trigger that causes this DTC to be set. If DTC B101D:F0 is set current in the Body Control Module (BCM), clear the codes. If DTC B101D:F0 clears with no other symptoms, DO NOT replace the BCM.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B101D 2016 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 2016 GMC Sierra code?
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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.
Frequently Asked Questions about B101D 2016 GMC Sierra Code
1. What does the OBDII code B101D mean on a 2016 GMC Sierra?
The B101D code indicates an issue with the Electronic Control Unit (ECU) hardware, often related to an internal fault or communication problem within the ECU.
2. What are the common symptoms of the B101D code on a 2016 GMC Sierra?
Symptoms may include warning lights on the dashboard, malfunctioning vehicle systems (like the infotainment or climate control), or intermittent communication issues between modules.
3. What causes the B101D code to appear on a 2016 GMC Sierra?
Common causes include a defective ECU, damaged wiring or connectors, software glitches, or power supply issues to the ECU.
4. Can I still drive my 2016 GMC Sierra with a B101D code?
You may be able to drive the vehicle, but certain systems may not function properly. It’s best to diagnose and address the issue promptly to avoid further complications.
5. How do I diagnose the B101D code on a 2016 GMC Sierra?
Use an advanced scan tool to read the code and check for related codes. Inspect the ECU, wiring, connectors, and power supply for damage or faults.
6. Can a software update fix the B101D code on a 2016 GMC Sierra?
In some cases, a software update or reprogramming the ECU may resolve the issue if it’s caused by a software glitch.
7. How much does it cost to fix a B101D code on a 2016 GMC Sierra?
Repair costs vary depending on the issue but can range from $100 for minor wiring repairs to over $1,000 if the ECU needs replacement.
8. Can I clear the B101D code without fixing the problem?
Clearing the code with a scan tool may temporarily remove it, but the issue will likely return unless the root cause is resolved.
9. Does the B101D code always mean the ECU is bad?
No, the code can also be caused by issues like poor connections, damaged wiring, or power supply problems, not just a faulty ECU.
10. Should I replace the ECU if I get a B101D code?
Not immediately. Perform a thorough diagnosis to rule out other potential causes like wiring or connector issues before replacing the ECU.
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