← View Generic B0949 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

B0949: B0949: Malfunction of Front Fog Lamp Relay

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$50 - $150
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 B0949 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The B0949 code indicates a malfunction in the front fog lamp relay, which is responsible for controlling the front fog lamps. This can cause the fog lamps to malfunction or not turn on.
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Symptoms

  • • Fog lamps not turning on
  • • intermittent fog lamp operation
  • • dashboard warning light illuminated
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Common Causes

  • • Faulty front fog lamp relay
  • • wiring issue
  • • blown fuse
  • • faulty fog lamp switch
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How to Fix B0949 on 2020 Chevrolet SILVERADO 1500 PICKUP

Check the fuse box for a blown fuse and replace it if necessary Inspect the wiring harness for damage or corrosion and repair or replace as needed Test the front fog lamp relay and replace it if faulty Check the fog lamp switch for proper operation and replace if necessary

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

front fog lamp relay Shop ↗ wiring harness Shop ↗ fog lamp switch Shop ↗

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Related Diagnostic Codes

Other codes that may appear with B0949

B0947 Sequential Code

B0947: Power Window Regulator Malfunction

Medium
B0948 Sequential Code

B0948: Seat Switch Circuit Malfunction

Medium
B0950 Sequential Code

B0950: Body System Security Malfunction

Medium
B0951 Sequential Code

B0951: Audio System 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