← View Generic P0805 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0805: P0805: Transmission Control Module (TCM) Range/Performance Problem

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$500 - $1500
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 P0805 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The TCM has detected a problem with the transmission's range and performance, which can cause issues with gear shifting, hesitation, or slipping.
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Symptoms

  • • Transmission hesitation
  • • slipping
  • • or difficulty shifting gears
  • • unusual noises
  • • or the check engine light is illuminated.
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Common Causes

  • • Faulty transmission solenoid
  • • faulty transmission pressure sensor
  • • faulty transmission temperature sensor
  • • faulty transmission control module
  • • or a problem with the transmission's hydraulic system.
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How to Fix P0805 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Use a scan tool to retrieve live data and monitor the transmission's performance. 2. Check the transmission's hydraulic system for leaks or damage. 3. Replace the faulty transmission solenoid, pressure sensor, or temperature sensor. 4. Update the transmission control module's software. 5. Perform a transmission fluid flush and replace the fluid.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Transmission solenoid Shop ↗ Transmission pressure sensor Shop ↗ Transmission temperature sensor Shop ↗ Transmission control module software update Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with P0805

P0803 Sequential Code

P0803: Transmission Control Module (TCM) Range/Performance Issue

Medium
P0804 Sequential Code

P0804: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0806 Sequential Code

P0806: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0807 Sequential Code

P0807: 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