← View Generic P0998 Guide Severity: Medium
🚗 Vehicle-Specific Guide

This guide is customized for your 2020 Chevrolet SILVERADO 1500 PICKUP

P0998: P0998: Transmission Advanced System - Pressure Control Solenoid 'A' Circuit Low

on 2020 Chevrolet SILVERADO 1500 PICKUP

Fix Cost
$100 - $500
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 P0998 Mean on 2020 Chevrolet SILVERADO 1500 PICKUP?

The transmission control module (TCM) has detected a low voltage signal from the pressure control solenoid 'A' circuit, which may indicate a problem with the solenoid, wiring, or TCM.
⚠️

Symptoms

  • • Transmission slipping
  • • hesitation
  • • or refusal to engage gears
  • • unusual noises
  • • or illuminated check engine light.
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Common Causes

  • • Faulty pressure control solenoid 'A'
  • • wiring issues
  • • TCM malfunction
  • • or low transmission fluid level.
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How to Fix P0998 on 2020 Chevrolet SILVERADO 1500 PICKUP

1. Check transmission fluid level and top off as needed. 2. Inspect and clean or replace the pressure control solenoid 'A' circuit wiring. 3. Test the solenoid with a multimeter to ensure proper voltage and resistance. 4. Update the TCM software if necessary. 5. Replace the pressure control solenoid 'A' if faulty.

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Parts for 2020 Chevrolet SILVERADO 1500 PICKUP

Pressure Control Solenoid 'A' Shop ↗ Wiring harness Shop ↗

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Related Diagnostic Codes

Other codes that may appear with P0998

P0996 Sequential Code

P0996: Transmission Advanced System - Pressure Control Solenoid 'A' Performance

Medium
P0997 Sequential Code

P0997: Transmission Advanced System - Pressure Control Solenoid 'A' Performance

Medium
P0999 Sequential Code

P0999: Transmission Advanced System Malfunction

Medium
P1000 Sequential Code

P1000: Manufacturer Specific Powertrain System Code

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