← View Generic B0350 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0350: B0350: Body Control Module (BCM) Security Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$500 - $1500
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 B0350 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a security malfunction, likely due to a faulty or tampered-with immobilizer system.
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Symptoms

  • • Car won't start
  • • alarm sounds constantly
  • • or dashboard warning lights are illuminated.
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Common Causes

  • • Faulty or tampered-with immobilizer system
  • • corrupted BCM software
  • • or a faulty BCM itself.
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How to Fix B0350 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the immobilizer system for any signs of tampering or damage. 2. Update the BCM software if necessary. 3. Replace the BCM if it's faulty.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Body Control Module (BCM) Shop ↗ Immobilizer system components Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

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Related Diagnostic Codes

Other codes that may appear with B0350

B0348 Sequential Code

B0348: Seat Switch Circuit Malfunction

Medium
B0349 Sequential Code

B0349: Turn Signal Lamp Malfunction

Medium
B0351 Sequential Code

B0351: Audio System Malfunction

Medium
B0352 Sequential Code

B0352: Airbag System Fault

Medium

💡 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