← View Generic B3150 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3150: B3150: Body Control Module (BCM) Security System 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 B3150 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a security system malfunction, which may be caused by a faulty sensor, wiring issue, or software problem.
⚠️

Symptoms

  • • Alarm sounds
  • • doors lock/unlock randomly
  • • security light flashes
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Common Causes

  • • Faulty BCM
  • • faulty sensor
  • • wiring issue
  • • software problem
  • • battery drain
🛠️

How to Fix B3150 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check BCM fuse and replace if blown. 2. Check and replace faulty sensor. 3. Check wiring for damage and repair. 4. Update BCM software if necessary. 5. Check battery condition and charge if necessary.

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

BCM fuse Shop ↗ sensor Shop ↗ wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B3150

B3148 Sequential Code

B3148: Seat Position Sensor Circuit Malfunction

Medium
B3149 Sequential Code

B3149: Exterior Lighting Malfunction

Medium
B3151 Sequential Code

B3151: Audio System Fault

Medium
B3152 Sequential Code

B3152: 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