P0920: P0920: Transmission Advanced System - Transmission Control Module (TCM) Internal Error

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost

$500 - $1500

Parts & Labor

Difficulty

4/5

1-2 hours

DIY Possible?

❌ No

Pro recommended

Your Vehicle

2020 Chevrolet

SILVERADO 1500 PICKUP

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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 P0920 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The Transmission Control Module (TCM) has detected an internal error, which may be caused by a faulty TCM, wiring issue, or other internal transmission component failure.

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Symptoms

• Transmission slipping
• hesitation
• or refusal to engage gears
• unusual noises
• or warning lights on the dashboard.

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Common Causes

• Faulty TCM
• wiring issue
• internal transmission component failure
• or software glitch.

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How to Fix P0920 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Clear the code and monitor the transmission's behavior. If the issue persists, replace the TCM. 2. Check and repair any wiring issues. 3. Inspect and replace any faulty internal transmission components.

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