← View Generic P0878 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0878: P0878: 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 P0878 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Transmission Control Module (TCM) has detected a problem with the transmission's range and performance, which may be caused by a faulty transmission sensor, faulty transmission solenoid, or a problem with the transmission's hydraulic system.
⚠️

Symptoms

  • • Transmission slips
  • • hesitation
  • • or hesitation when shifting gears
  • • difficulty shifting into gear
  • • transmission warning light on the dashboard
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Common Causes

  • • Faulty transmission sensor
  • • faulty transmission solenoid
  • • transmission hydraulic system problem
  • • clogged transmission filter
  • • low transmission fluid level
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How to Fix P0878 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check transmission fluid level and condition, 2. Scan for any other trouble codes, 3. Check transmission sensor and solenoid for any signs of damage or wear, 4. Perform a transmission fluid flush and replace the filter, 5. If the problem persists, replace the transmission sensor and/or solenoid

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Need Maintenance Info for Your SILVERADO 1500 PICKUP?

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

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

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Related Diagnostic Codes

Other codes that may appear with P0878

P0876 Sequential Code

P0876: Transmission Control Module (TCM) Range/Performance Issue

Medium
P0877 Sequential Code

P0877: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0879 Sequential Code

P0879: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0880 Sequential Code

P0880: Transmission Control Module (TCM) Internal Failure

High

💡 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