← View Generic P0845 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0845: P0845: 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 P0845 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The TCM has detected a problem with the transmission's ability to shift gears properly, possibly due to a faulty sensor or wiring issue.
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Symptoms

  • • Transmission slips
  • • hesitates
  • • or fails to engage gears
  • • unusual noises
  • • or the check engine light is illuminated.
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Common Causes

  • • Faulty transmission range sensor
  • • faulty transmission pressure sensor
  • • wiring issues
  • • or a problem with the transmission control module itself.
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How to Fix P0845 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check and clear any trouble codes. 2. Inspect and clean the transmission range sensor and transmission pressure sensor. 3. Check and repair any wiring issues. 4. Replace the faulty sensor or module if necessary.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Transmission range sensor Shop ↗ Transmission pressure sensor Shop ↗ Wiring harness Shop ↗

Essential Tool

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Related Diagnostic Codes

Other codes that may appear with P0845

P0843 Sequential Code

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

Medium
P0844 Sequential Code

P0844: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0846 Sequential Code

P0846: Transmission Control Module (TCM) Range/Performance Issue

Medium
P0847 Sequential Code

P0847: Transmission Control Module (TCM) Range/Performance Problem

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