B101D 2017 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 2017 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 2017 GMC Sierra Description
What are the Possible Causes of the DTC B101D 2017 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 2017 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 2017 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.
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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 2017 GMC Sierra Code
1. What does the OBDII code B101D mean on a 2017 GMC Sierra?
The code B101D indicates an issue with the hardware of the Electronic Control Unit (ECU), typically related to a malfunction or internal fault.
2. What are the common symptoms of B101D in a 2017 GMC Sierra?
Symptoms may include illuminated warning lights on the dashboard, malfunctioning vehicle systems, or intermittent electronic issues.
3. What causes the B101D code to appear on a 2017 GMC Sierra?
Common causes include a faulty ECU, wiring issues, software corruption, or damage to the control unit from electrical surges or physical impact.
4. Can driving with a B101D code damage my 2017 GMC Sierra?
Driving with a B101D code may not cause additional damage immediately, but unresolved ECU issues can lead to further system failures over time.
5. How do I diagnose the B101D code on my 2017 GMC Sierra?
Diagnose the issue by using an OBDII scanner to verify the code, inspecting the ECU and its wiring for damage, and checking for any software updates.
6. Can the B101D code be fixed by resetting the ECU?
In some cases, resetting the ECU may clear the code temporarily, but if the hardware issue persists, the code will likely return.
7. Do I need to replace the ECU to fix the B101D code?
Not always. First, check for loose connections, damaged wiring, or software issues. If the ECU is confirmed faulty, replacement may be necessary.
8. How much does it cost to repair a B101D code on a 2017 GMC Sierra?
Costs can vary widely. Diagnosing and repairing wiring or connection issues may cost $100-$300, while ECU replacement can range from $500 to $1,500, including labor.
9. Can I fix the B101D code myself on a 2017 GMC Sierra?
If you have experience with vehicle electronics, you can inspect wiring and connections or perform a software update. For ECU replacement, professional assistance is recommended.
10. What tools are needed to address a B101D code on a 2017 GMC Sierra?
You’ll need an OBDII scanner, a multimeter to test electrical connections, and possibly a diagnostic tool to update or reprogram the ECU.
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