← View Generic C1605 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

C1605: C1605: Suspension Control Module (SCM) 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 C1605 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Suspension Control Module (SCM) has detected a fault in the suspension system. This code is specific to Toyota and indicates a problem with the SCM's communication with the suspension sensors.
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Symptoms

  • • Unusual suspension behavior
  • • uneven tire wear
  • • reduced ride height
  • • and possible loss of stability control
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Common Causes

  • • Faulty suspension sensors
  • • damaged or corroded wiring
  • • or a malfunctioning SCM
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How to Fix C1605 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and clear any trouble codes. 2. Inspect and clean the suspension sensors and wiring. 3. Replace the SCM if faulty. 4. Check and adjust the suspension system for proper alignment.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Suspension Control Module Shop ↗ Suspension sensors Shop ↗ Wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with C1605

C1603 Sequential Code

C1603: ABS System Malfunction

Medium
C1604 Sequential Code

C1604: Brake System Malfunction

Medium
C1606 Sequential Code

C1606: Steering Column Position Sensor Circuit Malfunction

Medium
C1607 Sequential Code

C1607: 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