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P3402 GMC Code - Cylinder 1 Deactivation Solenoid Valve Control Performance

Quick Answer

The P3402 GMC code indicates an issue with the cylinder 1 deactivation solenoid valve control performance in the vehicle. Common causes include Faulty solenoid valve, Electrical wiring issues, Sensor malfunction. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
P3402 GMC indicates Cylinder 1 Deactivation Solenoid Valve Control Performance.
Common causes
Common causes include Faulty solenoid valve, Electrical wiring issues, Sensor malfunction.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 09, 2024
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Code P3402 GMC Description

The P3402 GMC code indicates an issue with the cylinder 1 deactivation solenoid valve control performance in the vehicle. This solenoid valve is responsible for controlling the deactivation of cylinder 1 in certain conditions to improve fuel efficiency and reduce emissions. When this code is triggered, it means that the control system for the solenoid valve is not functioning as intended, leading to potential performance issues.

OBDII Code P3402 GMC - Cylinder 1 Deactivation Solenoid Valve Control Performance
P3402 GMC Code - Cylinder 1 Deactivation Solenoid Valve Control Performance

Common Causes of P3402 GMC

  1. Faulty solenoid valve
  2. Electrical wiring issues
  3. Sensor malfunction
  4. Mechanical problems in the deactivation system
  5. Engine control module (ECM) failure

Symptoms of P3402 GMC

  1. Decreased fuel efficiency
  2. Power loss
  3. Rough idling
  4. Erratic engine performance
  5. Unusual engine noises

How to Fix P3402 GMC

  1. Diagnose the issue by using a scan tool to read the trouble code and check the solenoid valve's operation.
  2. Inspect the electrical connections and wiring related to the solenoid valve for any damage or loose connections.
  3. Test the solenoid valve for proper operation and replace it if necessary.
  4. Check the sensors and ECM for any faults and replace them if needed.
  5. Clear the trouble code from the ECM and test drive the vehicle to ensure the issue is resolved.

Cost to Fix P3402 GMC

The cost of repairing the cylinder 1 deactivation solenoid valve control performance issue can vary depending on the specific cause of the problem and the labor rates in your area. On average, the cost of parts for this repair can range from $100 to $300, while the labor cost can be between $150 and $300. Therefore, the total repair cost is typically around $250 to $600. Keep in mind that prices can differ based on location, vehicle make and model, and the complexity of the repair. It's recommended to obtain quotes from a few different auto repair shops to compare prices.

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Information for Specific GMC Models

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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