← View Generic C3789 Guide Severity: High
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

C3789: C3789: Front Left Lower Control Arm Fracture

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$250 - $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 C3789 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

This code indicates a fracture in the front left lower control arm, which affects the suspension's ability to absorb bumps and maintain vehicle stability.
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Symptoms

  • • Uneven tire wear
  • • loose steering
  • • clunking or rattling noises when driving over bumps
  • • and reduced handling and braking performance.
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Common Causes

  • • Front left lower control arm fracture
  • • worn or damaged bushings
  • • loose or damaged control arm mounting hardware.
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How to Fix C3789 on 2020 Chevrolet SILVERADO 1500 PICKUP

Replace the front left lower control arm, inspect and replace bushings as needed, tighten or replace mounting hardware.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Front left lower control arm Shop ↗ Bushings (as needed) Shop ↗ Mounting hardware (as needed) Shop ↗

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Related Diagnostic Codes

Other codes that may appear with C3789

C3787 Sequential Code

C3787: ABS System Malfunction

High
C3788 Sequential Code

Chassis System Code C3788 - Brake System

High
C3790 Sequential Code

C3790: Steering Column Lock Actuator Circuit Malfunction

Medium
C3791 Sequential Code

C3791: Electronic Stability Control (ESC) 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