← View Generic B1261 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B1261: B1261: Body Control Module (BCM) Malfunction - Exterior Lighting

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 B1261 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Body Control Module (BCM) has detected a malfunction in the exterior lighting system, such as a faulty headlight or taillight.
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Symptoms

  • • Dim or inoperative exterior lights
  • • warning lights on the dashboard
  • • or erratic lighting behavior.
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Common Causes

  • • Faulty BCM
  • • wiring issues
  • • blown fuse
  • • or damaged exterior lighting components.
🛠️

How to Fix B1261 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check the BCM for any error codes or faults. 2. Inspect and replace any blown fuses. 3. Check and repair any wiring issues. 4. Replace faulty exterior lighting components. 5. Update the BCM software if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

BCM Shop ↗ fuses Shop ↗ wiring harness Shop ↗ exterior lighting components Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B1261

B1259 Sequential Code

B1259: Window Regulator Malfunction

Medium
B1260 Sequential Code

B1260: Seat Position Sensor Circuit Malfunction

Medium
B1262 Sequential Code

B1262: Body System Security Malfunction

Medium
B1263 Sequential Code

B1263: Audio System Fault

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