← View Generic B0404 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0404: B0404: Seat Switch Circuit Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $300
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 B0404 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0404 code indicates a malfunction in the seat switch circuit, which controls the seat's position, recline, or lumbar support. This code is usually triggered when the seat switch circuit is faulty or damaged.
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Symptoms

  • • Seat may not move or recline properly
  • • seat may be stuck
  • • or seat warning light is illuminated on the dashboard.
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Common Causes

  • • Faulty seat switch
  • • damaged or corroded wiring
  • • seat switch circuit board failure
  • • or faulty seat control module.
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How to Fix B0404 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to reset the system. 2. Check and clean the seat switch and surrounding area for corrosion or debris. 3. Inspect the wiring and connectors for damage or corrosion. 4. Replace the faulty seat switch or circuit board if necessary. 5. Test the seat switch circuit to ensure proper function.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Seat switch Shop ↗ Wiring harness Shop ↗ Circuit board Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with B0404

B0402 Sequential Code

B0402: Door Locks Malfunction

Medium
B0403 Sequential Code

B0403: Power Window Circuit Malfunction

Medium
B0405 Sequential Code

B0405: Exterior Lighting Malfunction

Medium
B0406 Sequential Code

B0406: Body System Security Malfunction

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