← View Generic C1402 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

C1402: C1402: Rear Suspension Control Module (RSCM) 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 C1402 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The C1402 code indicates a fault in the rear suspension control module (RSCM), which regulates the rear suspension's height and damping.
⚠️

Symptoms

  • • Sagging rear suspension
  • • uneven tire wear
  • • reduced ride height
  • • and possible loss of stability.
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Common Causes

  • • Faulty RSCM
  • • wiring issues
  • • or sensor malfunctions.
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How to Fix C1402 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Disconnect the battery to clear the code. 2. Inspect and clean the RSCM wiring harness. 3. Check and replace faulty sensors. 4. Update the RSCM software if necessary. 5. Replace the RSCM if all else fails.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

RSCM Shop ↗ wiring harness Shop ↗ sensors Shop ↗

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Related Diagnostic Codes

Other codes that may appear with C1402

C1400 Sequential Code

C1400: Anti-lock Brake System (ABS) Fault

Medium
C1401 Sequential Code

C1401: Brake System Pressure Sensor Circuit Malfunction

Medium
C1403 Sequential Code

C1403: Steering Column Position Sensor Circuit Malfunction

Medium
C1404 Sequential Code

C1404: 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