← View Generic B2670 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B2670: B2670: Body System Security Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$200 - $800
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
❌ No
Pro recommended
Your Vehicle
2020 Chevrolet
SILVERADO 1500 PICKUP
⚠️

Important for 2020 Chevrolet SILVERADO 1500 PICKUP Owners

Before starting repairs, verify which engine your 2020 Chevrolet SILVERADO 1500 PICKUP has. Check your VIN or engine code to ensure you order the correct parts.

📖 What Does B2670 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The body control module (BCM) has detected a security malfunction, which may be caused by a faulty BCM, wiring issue, or other security system component.
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Symptoms

  • • Alarm system malfunction
  • • doors or trunk won't unlock
  • • or security light on dashboard
🔍

Common Causes

  • • Faulty BCM
  • • wiring issue
  • • faulty security system component
  • • or incorrect programming
🛠️

How to Fix B2670 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check BCM wiring and connections for damage or corrosion. 2. Update BCM software if necessary. 3. Replace faulty BCM or security system component. 4. Check and reset security system settings.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Body Control Module Shop ↗ Wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B2670

B2668 Sequential Code

B2668: Seat Position Sensor Circuit Malfunction

Medium
B2669 Sequential Code

B2669: Exterior Lighting Malfunction

Medium
B2671 Sequential Code

B2671: Audio System Malfunction

Medium
B2672 Sequential Code

B2672: Airbag System Fault

High

💡 Why These Codes Are Related:

  • • Similar Issues: Same root cause or component failure
  • • Related Problems: Often occur together due to system interactions
  • • Sequential Codes: Progressive failure stages or multiple sensors
  • • Same System: Components within the same automotive system