← View Generic B3851 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B3851: B3851: Power Window Regulator Malfunction

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$150 - $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 B3851 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The power window regulator is malfunctioning, preventing the window from moving up or down properly.
⚠️

Symptoms

  • • Window stuck
  • • won't move
  • • or moves erratically
  • • may have a grinding or screeching noise
🔍

Common Causes

  • • Faulty power window regulator
  • • worn-out or damaged window tracks
  • • faulty window switch
🛠️

How to Fix B3851 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect battery to prevent accidental window movement. 2. Remove door panel and window regulator assembly. 3. Inspect and clean window tracks. 4. Replace faulty window regulator or tracks if damaged. 5. Reassemble and test window operation.

🔧

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

Power window regulator Shop ↗ Window tracks 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 B3851

B3849 Sequential Code

B3849: Climate Control Temperature Sensor Malfunction

Medium
B3850 Sequential Code

B3850: Door Locks Actuator Malfunction

Medium
B3852 Sequential Code

B3852: Seat Position Sensor Circuit Malfunction

Medium
B3853 Sequential Code

B3853: Exterior 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