← View Generic B2990 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B2990: B2990: 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 B2990 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B2990 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
  • • or security light on dashboard
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Common Causes

  • • Faulty security module
  • • wiring issue
  • • or incorrect security system configuration
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How to Fix B2990 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check security system configuration and ensure all settings are correct. 2. Inspect wiring and connections for damage or corrosion. 3. Replace faulty security module if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

security module Shop ↗ wiring harness Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with B2990

B2988 Sequential Code

B2988: Seat Switch Circuit Malfunction

Medium
B2989 Sequential Code

B2989: Exterior Lighting Malfunction

Medium
B2991 Sequential Code

B2991: Audio System Fault

Medium
B2992 Sequential Code

B2992: 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