This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP
B1398: B1398: Immobilizer System Malfunction
on 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 B1398 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?
Symptoms
- • Engine won't start
- • immobilizer light on dashboard
Common Causes
- • Faulty immobilizer key fob
- • antenna
- • or receiver
- • low battery in key fob
- • incorrect key fob programming
How to Fix B1398 on 2020 Chevrolet SILVERADO 1500 PICKUP
1. Check key fob battery level and replace if necessary. 2. Try reprogramming the key fob. 3. Replace the immobilizer antenna or receiver if faulty. 4. Check for any debris or corrosion on the antenna or receiver connections.
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Essential Tool
OBD2 Scanner
Read & clear codes on your 2020 Chevrolet SILVERADO 1500 PICKUP
Shop Scanners ↗Related Diagnostic Codes
Other codes that may appear with B1398
B1396: Seat Switch Circuit Malfunction
B1397: Exterior Lighting Malfunction
B1399: Audio System Fault
B1400: Airbag System Malfunction
💡 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