P0928: P0928: 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 P0928 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 P0928 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check for any loose or damaged wiring and repair or replace as needed. 2. Update the TCM software if necessary. 3. Replace the TCM if it's faulty. 4. Inspect and replace any internal transmission components that may be faulty.

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