Chevrolet B101D: XX: ECU Hardware

What Does The Chevrolet B101D Code Mean?

The control module runs the program to detect an internal fault when power up is commanded. The only requirements are voltage, high voltage, and ground. This program runs even if the voltage is out of the valid operating range.

This code indicates that the control module has detected an internal malfunction.

Recommended Parts

Below are some recommended auto parts to help you address the trouble code affecting your vehicle and get it running smoothly again:

>>> WORKPRO 582-piece Crimp Terminals, Wire Connectors, Heat Shrink Tube, Electrical Repair Kit
>>> GM Genuine Parts 12633238 Engine Control Module

Note: During the purchasing process, please check carefully whether the part you want to buy fits your car!

Reference Sources

• GM, 2012, Service Bullettin – Airbag Warning Light – Reprogram Module.
• GM, 2013, Service Bullettin – No Heat In EV Electric Mode DTC B101D.
• GM, 2013, Service Bullettin – Diagnostic Tip: OnStar Module Does Not Support All B101D Symptom Codes.
• GM, 2014, Service Bullettin – BCM DTC B101D SYM F0 – Dead Battery – RKE Inop – Horn – Wipers – Hazard Flasher Stuck On.
• GM, 2014, Service Bullettin – Diagnostic Tip: OnStar Module Does Not Support All B101D Symptom Codes.
• GM, 2014, Service Bullettin – Diagnosing SES Light On No Start And Various Other Electrical Concerns.
• GM, 2015, Service Bullettin – Diagnostic Tip for BCM DTC B101D SYM F0 Set with No Other Symptoms.
• GM, 2015, Service Bullettin – Diagnostic Tips for Airbag Readiness Light On, DTC B101D SYM 00 and C0186, C0196 and/or C0287 Set.
• GM, 2015, Service Bullettin – Engineering Information – Service Side Detection System Message Displayed and/or DTCs B101D, U0232
  and/or U0233 Set.