---
title: "GMC SRS DTC Code: B1000 Faulty ECU"
description: "GMC SRS DTC Code: B1000 Faulty ECU"
---

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# GMC SRS DTC Code: B1000 Faulty ECU

Vehicles:

Buick, Cadillac, Chevy, GMC

 

What does this mean?

The possible cause is that the Electronic Control Unit is faulty

 

**Troubleshooting**

Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed-out, or corroded connector pins.

Recommend checking the nearest dealer to see if there is a bulletin related to this code for a fix for this code. If not, replacement is needed.

 

**Sub codes**

B1000:00 Electronic Control Unit (ECU) Performance No Additional Information Available

B1000:04 Side Object Detection Performance - RAM Failure

B1000:08 Electronic Control Unit Performance Signal Invalid

B1000:12 Electronic Control Unit Performance Below Minimum Threshold

B1000:31 Electronic Control Unit General Checksum Problem

B1000:33 Electronic Control Unit Performance Special Memory Failure

B1000:34 Electronic Control Unit Performance RAM Integrity

B1000:35 Electronic Control Unit Performance ROM Integrity

B1000:36 Electronic Control Unit Performance EEPROM Integrity

B1000:37 Electronic Control Unit Performance Watchdog / Safety Failure

B1000:38 Electronic Control Unit Performance Supervision Software Failure

B1000:39 Electronic Control Unit Performance Internal Electronic Failure

B1000:43 Electronic Control Unit Performance EEPROM Error

B1000:46 Side Object Detection Performance - Invalid Configuration

B1000:56 Electronic Control Unit Performance Allowable Number of Transitions/Events Exceeded

B1000:57 Electronic Control Unit Performance

B1000:73 Electronic Control Unit Performance Parity Error

B1000:0F Electronic Control Unit Performance Erratic

B1000:2B Electronic Control Unit Performance Missing Reference

B1000:2C Electronic Control Unit Performance Reserved

B1000:3B Electronic Control Unit Performance Internal Self-Test Failed

B1000:3C Electronic Control Unit Performance Internal Communications Failure

B1000:4A Side Object Detection Performance - PROM Checksum Error

B1000:F0 Side Object Detection RF Transmit Chain Failed

B1000:F1 Side Object Detection RF Receive Chain Failed

B1000:F2 Side Object Detection Frequency Calibration Failure

B1000:F3 Side Object Detection Inter-Processor Communication Failed

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