← View Generic B0726 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0726: B0726: Body Control Module (BCM) Security Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$200 - $1000
Parts & Labor
Difficulty
4/5
2-4 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 B0726 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a security malfunction, which can cause issues with door locks, alarm systems, and other body control functions.
⚠️

Symptoms

  • • Door locks may not function
  • • alarm system may not arm/disarm
  • • dashboard warning lights may be illuminated.
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Common Causes

  • • Faulty BCM
  • • faulty wiring harness
  • • faulty door lock actuators
  • • faulty alarm system components.
🛠️

How to Fix B0726 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and clear any trouble codes. 2. Inspect and repair any damaged wiring harnesses. 3. Replace faulty BCM or alarm system components. 4. Test and adjust door lock actuators.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Body Control Module Shop ↗ Wiring Harness Shop ↗ Door Lock Actuators Shop ↗ Alarm System Components Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B0726

B0724 Sequential Code

B0724: Seat Position Sensor Malfunction

Medium
B0725 Sequential Code

B0725: Body System Code - Exterior Lighting Malfunction

Medium
B0727 Sequential Code

B0727: Audio System Fault

Medium
B0728 Sequential Code

B0728: Airbag System Malfunction

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