← View Generic P0814 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0814: P0814: Transmission Control Module (TCM) Range/Performance Issue

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$200 - $1000
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 P0814 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Transmission Control Module (TCM) has detected an issue with its range and performance, which may cause transmission problems.
⚠️

Symptoms

  • • Transmission slipping
  • • hesitation
  • • or refusal to engage gears
  • • unusual noises
  • • or difficulty shifting
🔍

Common Causes

  • • Faulty TCM
  • • transmission solenoid malfunction
  • • wiring issues
  • • or low transmission fluid level
🛠️

How to Fix P0814 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check transmission fluid level and condition; 2. Inspect wiring and connectors for damage; 3. Test transmission solenoids; 4. Update TCM software if necessary; 5. Replace faulty TCM or transmission solenoids if necessary

🔧

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Transmission Control Module Shop ↗ Transmission Solenoids Shop ↗ Wiring Harness Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with P0814

P0812 Sequential Code

P0812: Transmission Control Module (TCM) Internal Fault

Medium
P0813 Sequential Code

P0813: Transmission Control Module (TCM) Internal Fault

Medium
P0815 Sequential Code

P0815: Transmission Control Module (TCM) Internal Fault

Medium
P0816 Sequential Code

P0816: Transmission Control Module (TCM) Range/Performance Issue

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