← View Generic B1187 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1187: B1187: Window Regulator Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $300
Parts & Labor
Difficulty
3/5
1-2 hours
DIY Possible?
✅ Yes
Save money
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 B1187 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B1187 code indicates a problem with the window regulator, which controls the movement of the window up and down.
⚠️

Symptoms

  • • Window stuck or slow to move
  • • unusual noise when rolling up or down
  • • window may not roll up or down at all
🔍

Common Causes

  • • Faulty window regulator motor
  • • worn or damaged regulator tracks
  • • faulty window switch
🛠️

How to Fix B1187 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect battery to prevent accidental window movement. 2. Remove door panel to access regulator. 3. Inspect regulator tracks for damage or wear. 4. Replace faulty regulator motor or tracks if necessary. 5. Reassemble door panel.

🔧

Need Maintenance Info for Your SILVERADO 1500 PICKUP?

Get oil capacity, filter specs, and torque settings for your specific 2020 Chevrolet SILVERADO 1500 PICKUP.

View 2020 Chevrolet SILVERADO 1500 PICKUP Specs

Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Window regulator motor Shop ↗ Regulator tracks Shop ↗ Window switch Shop ↗

Essential Tool

Must Have

OBD2 Scanner

Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP

Shop Scanners ↗
🔗

Related Diagnostic Codes

Other codes that may appear with B1187

B1185 Sequential Code

B1185: Climate Control Fan Motor Malfunction

Medium
B1186 Sequential Code

B1186: Door Locks Malfunction

Medium
B1188 Sequential Code

B1188: Seat Switch Circuit Malfunction

Medium
B1189 Sequential Code

B1189: Body System Code - Lighting 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