← View Generic B1156 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1156: B1156: Seat Switch Circuit Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $200
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 B1156 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The seat switch circuit has malfunctioned, preventing the driver's seat from functioning properly. This code is typically set when the seat switch circuit is open or shorted.
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Symptoms

  • • Seat won't move
  • • seat switch lights on dashboard won't turn off
  • • seat may be stuck in position
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Common Causes

  • • Faulty seat switch
  • • wiring issue
  • • seat switch circuit malfunction
  • • faulty seat motor
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How to Fix B1156 on 2020 Chevrolet SILVERADO 1500 PICKUP

Disconnect the battery to reset the code Check and clean the seat switch and wiring Replace the faulty seat switch or seat motor if necessary Reconnect the battery and clear the code

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Seat switch Shop ↗ Wiring harness Shop ↗ Seat motor Shop ↗

Essential Tool

Must Have

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Related Diagnostic Codes

Other codes that may appear with B1156

B1154 Sequential Code

B1154: Door Locks Malfunction

Medium
B1155 Sequential Code

B1155: Power Window Switch Circuit Malfunction

Medium
B1157 Sequential Code

B1157: Exterior Lighting Malfunction

Medium
B1158 Sequential Code

B1158: 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