← View Generic P0844 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0844: P0844: 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 P0844 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The TCM has detected a problem with the transmission's range and performance, possibly due to a faulty sensor or faulty transmission control module.
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Symptoms

  • • Transmission slipping
  • • hesitation
  • • or failure to engage gears
  • • unusual noises
  • • or difficulty shifting
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Common Causes

  • • Faulty transmission control module
  • • faulty transmission range sensor
  • • faulty transmission pressure sensor
  • • faulty transmission temperature sensor
  • • faulty transmission solenoid
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How to Fix P0844 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Clear any trouble codes and test drive the vehicle to see if the problem persists. 2. Check and replace any faulty sensors. 3. Update the transmission control module's software. 4. Replace the transmission control module if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Transmission control module Shop ↗ Transmission range sensor Shop ↗ Transmission pressure sensor Shop ↗ Transmission temperature sensor Shop ↗ Transmission solenoid Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with P0844

P0842 Sequential Code

P0842: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0843 Sequential Code

P0843: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0845 Sequential Code

P0845: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0846 Sequential Code

P0846: 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