← View Generic B0446 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0446: B0446: Body System Security Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $500
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 B0446 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

This code indicates a malfunction in the vehicle's security system, which may cause issues with door locks, alarm systems, or other security-related functions.
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Symptoms

  • • Difficulty locking/unlocking doors
  • • alarm system malfunction
  • • security light on dashboard
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Common Causes

  • • Faulty security module
  • • wiring issues
  • • faulty door lock actuators
🛠️

How to Fix B0446 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check security module for faults and replace if necessary. 2. Inspect wiring for damage or corrosion and repair as needed. 3. Test door lock actuators and replace if faulty.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Security module Shop ↗ Wiring harness Shop ↗ Door lock actuators Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with B0446

B0444 Sequential Code

B0444: Seat Switch Circuit Malfunction

Medium
B0445 Sequential Code

B0445: Body Control Module (BCM) Malfunction - Lighting

Medium
B0447 Sequential Code

B0447: Audio System Malfunction

Medium
B0448 Sequential Code

B0448: Airbag System Circuit 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