← View Generic C3685 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

C3685: C3685: Electric Power Steering (EPS) System Fault

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$200 - $800
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 C3685 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The C3685 code indicates a fault in the Electric Power Steering (EPS) system, which may cause the vehicle's steering to become difficult or unresponsive.
⚠️

Symptoms

  • • Difficulty steering
  • • uneven tire wear
  • • vibration while driving
  • • and/or a warning light on the dashboard.
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Common Causes

  • • Faulty EPS motor
  • • faulty EPS control module
  • • loose or damaged electrical connections
  • • or a malfunctioning steering angle sensor.
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How to Fix C3685 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to reset the EPS system. 2. Check and clean all electrical connections. 3. Replace the EPS motor or control module if faulty. 4. Check and adjust the steering angle sensor.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

EPS motor Shop ↗ EPS control module Shop ↗ steering angle sensor Shop ↗

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Related Diagnostic Codes

Other codes that may appear with C3685

C3683 Sequential Code

C3683: Brake System Pressure Sensor Circuit Malfunction

Medium
C3684 Sequential Code

C3684: Rear Suspension Strut Friction Bushing Fault

Medium
C3686 Sequential Code

C3686: Electronic Stability Control (ESC) Malfunction

Medium
C3687 Sequential Code

C3687: Traction Control 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