← View Generic P0806 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

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

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 P0806 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 transmission warning light on the dashboard.
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Common Causes

  • • Faulty transmission solenoid
  • • faulty transmission sensor
  • • low transmission fluid level
  • • clogged transmission filter
  • • or a faulty transmission control module.
🛠️

How to Fix P0806 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check transmission fluid level and condition. 2. Scan for any other trouble codes. 3. Test transmission solenoids and sensors. 4. Replace faulty solenoids or sensors. 5. Check and clean the transmission filter. 6. Update the transmission control module's software if necessary.

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

Get oil capacity, filter specs, and torque settings for your specific 2020 Chevrolet SILVERADO 1500 PICKUP.

View 2020 Chevrolet SILVERADO 1500 PICKUP Specs

Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Transmission solenoid Shop ↗ Transmission sensor Shop ↗ Transmission filter Shop ↗

Essential Tool

Must Have

OBD2 Scanner

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Related Diagnostic Codes

Other codes that may appear with P0806

P0804 Sequential Code

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

Medium
P0805 Sequential Code

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

Medium
P0807 Sequential Code

P0807: Transmission Control Module (TCM) Range/Performance Issue

Medium
P0808 Sequential Code

P0808: 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