← View Generic B0422 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0422: B0422: Body Control Module (BCM) Security System Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$200 - $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 B0422 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a malfunction in the security system, which may cause the vehicle to be in a locked state or prevent the engine from starting.
⚠️

Symptoms

  • • Car won't start
  • • doors won't unlock
  • • alarm sounds continuously
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Common Causes

  • • Faulty BCM
  • • bad or loose wiring
  • • security system sensor malfunction
  • • battery drain
🛠️

How to Fix B0422 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and reset the BCM, 2. Inspect and repair or replace wiring, 3. Replace faulty security system sensor, 4. Check and repair any battery drain issues

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Body Control Module Shop ↗ Wiring harness Shop ↗ Security system sensor Shop ↗

Essential Tool

Must Have

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Related Diagnostic Codes

Other codes that may appear with B0422

B0420 Sequential Code

B0420: Seat Switch Circuit Malfunction

Medium
B0421 Sequential Code

B0421: Body Control Module (BCM) Malfunction - Exterior Lighting

Medium
B0423 Sequential Code

B0423: Audio System Malfunction

Medium
B0424 Sequential Code

B0424: 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