← View Generic P0849 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0849: P0849: Transmission Control Module (TCM) Range/Performance Issue

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$200 - $800
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 P0849 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Transmission Control Module (TCM) has detected an issue with the transmission's range and performance, potentially causing problems with gear shifting and transmission function.
⚠️

Symptoms

  • • Transmission slipping
  • • hesitation
  • • or refusal to engage gears
  • • unusual noises
  • • or difficulty shifting into gear.
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Common Causes

  • • Faulty transmission solenoid
  • • clogged transmission filter
  • • low transmission fluid level
  • • faulty TCM
  • • or wiring issues.
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How to Fix P0849 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check transmission fluid level and condition. 2. Inspect and clean the transmission filter. 3. Test the transmission solenoids. 4. Update the TCM software. 5. Replace the faulty solenoid or TCM 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 filter Shop ↗ Transmission fluid Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0849

P0847 Sequential Code

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

Medium
P0848 Sequential Code

P0848: Transmission Control Module (TCM) Range/Performance Issue

Medium
P0850 Sequential Code

P0850: Transmission Control Module (TCM) Range/Performance Problem

Medium
P0851 Sequential Code

P0851: 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