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Engine-Codes – GMC – P3433 GMC

P3433 GMC Code - Cylinder 5 Deactivation/Intake Valve Control Circuit/Open

Quick Answer

The P3433 GMC diagnostic trouble code indicates an issue with the Cylinder 5 Deactivation/Intake Valve Control Circuit being open. Common causes include Faulty cylinder deactivation solenoid, Wiring issue in the intake valve control circuit, Defective engine control module (ECM). 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
P3433 GMC indicates Cylinder 5 Deactivation/Intake Valve Control Circuit/Open.
Common causes
Common causes include Faulty cylinder deactivation solenoid, Wiring issue in the intake valve control circuit, Defective engine control module (ECM).
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 P3433 GMC Description

The P3433 GMC diagnostic trouble code indicates an issue with the Cylinder 5 Deactivation/Intake Valve Control Circuit being open. This code is typically found in vehicles equipped with variable displacement systems that allow the engine to deactivate cylinders to improve fuel efficiency and reduce emissions. In this case, the system responsible for deactivating cylinder 5 or controlling the intake valve in that cylinder is not functioning properly.

OBDII Code P3433 GMC - Cylinder 5 Deactivation/Intake Valve Control Circuit/Open
P3433 GMC Code - Cylinder 5 Deactivation/Intake Valve Control Circuit/Open

Common Causes of P3433 GMC

  1. Faulty cylinder deactivation solenoid
  2. Wiring issue in the intake valve control circuit
  3. Defective engine control module (ECM)
  4. Poor electrical connection in the circuit
  5. Mechanical issue with the intake valve

Symptoms of P3433 GMC

  1. Reduced engine power
  2. Rough idling or stalling
  3. Check engine light illuminated
  4. Decreased fuel efficiency
  5. Hesitation during acceleration

How to Fix P3433 GMC

  1. Begin by diagnosing the specific cause of the issue using a scan tool to read the trouble codes and perform component testing.
  2. Inspect the wiring and connections in the intake valve control circuit for any damage or corrosion. Repair or replace as needed.
  3. Test the cylinder deactivation solenoid for proper operation and replace if faulty.
  4. Check the engine control module (ECM) for any signs of malfunction and reprogram or replace if necessary.
  5. Clear the trouble codes and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P3433 GMC

The typical repair costs for addressing the Cylinder 5 Deactivation/Intake Valve Control Circuit/Open issue can vary depending on the specific cause of the problem. In general, parts such as a new cylinder deactivation solenoid or ECM can range from $100 to $500, while labor costs can be between $100 and $300. Overall, the total repair bill may fall within the range of $200 to $800. However, it's important to note that actual costs can vary based on factors such as the vehicle make and model, location, and the shop's labor rates. It's recommended to obtain multiple quotes from reputable auto repair shops to get a more accurate estimate.

When is the Code Detected?

The control module detects that the actual measured values from the MAF sensor, MAP sensor, and TP sensor, is not within the range of the calculated values for cylinder deactivation mode

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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.

Frequently Asked Questions about P3433 GMC Code

1. What are the common symptoms of OBDII code P3433 in a GMC vehicle?

- Common symptoms include engine misfires, reduced engine performance, rough idling, and the illumination of the Check Engine light.

2. What could cause the OBDII code P3433 to trigger in a GMC vehicle?

- The code may be triggered by a faulty cylinder deactivation solenoid, a wiring issue in the intake valve control circuit, or a problem with the engine control module (ECM).

3. How can I diagnose the cause of OBDII code P3433 in my GMC vehicle?

- Diagnosing this code typically involves using a scan tool to check for other related trouble codes, testing the cylinder deactivation solenoid, inspecting the wiring for any damage, and checking the ECM for proper function.

4. Is it safe to continue driving with OBDII code P3433 present in a GMC vehicle?

- It is not recommended to drive with this code present, as it can lead to further engine damage and poor performance. It's best to address the issue promptly.

5. Can I repair OBDII code P3433 in my GMC vehicle myself?

- Depending on your mechanical skills, you may be able to address the issue yourself by replacing the faulty cylinder deactivation solenoid, repairing any damaged wiring, or resetting the ECM. However, professional help may be needed for a thorough diagnosis and repair.

6. What are some tips for preventing OBDII code P3433 from occurring in the future?

- Regularly maintaining your vehicle, including following the manufacturer's recommended service schedule, can help prevent issues like P3433. Additionally, avoiding harsh driving conditions and promptly addressing any engine-related problems can help prevent this code from reoccurring.

7. How much does it typically cost to repair OBDII code P3433 in a GMC vehicle?

- The cost of repair can vary depending on the exact cause of the code and whether you choose to do the repair yourself or take it to a professional mechanic. Costs may range from a few hundred dollars to over a thousand dollars.

8. Can a faulty cylinder deactivation solenoid cause other issues in a GMC vehicle besides triggering code P3433?

- Yes, a faulty cylinder deactivation solenoid can lead to other issues such as poor fuel economy, increased emissions, and potential damage to the engine over time if not addressed promptly.

9. Will resetting the Check Engine light make OBDII code P3433 go away in a GMC vehicle?

- Resetting the Check Engine light may temporarily turn it off, but the underlying issue causing code P3433 will still remain. It's important to diagnose and repair the problem to prevent further issues.

10. How long does it typically take to repair OBDII code P3433 in a GMC vehicle?

- The repair time can vary depending on the exact cause of the code, the availability of parts, and whether you're doing the repair yourself or taking it to a professional. Repairs may range from a couple of hours to a full day.

Discuss the causes and fixes for P3433 GMC OBDII Code

Submit a New Comment

  • My daughter purchased a new 2017 Acadia v6 yesterday and attempted to drive it home 35 miles away. She stopped at my house to show me her new car. I went out to look at it and take it for a drive. When I started the car the engine light came on and stayed on. ON STAR DIAGNOSTICS reported the P3433 code. What are chances of a new car with less than 100 miles this would occur?

    Reply to Comment

  • Wow, 100 miles and already with a code. Any driveability problems?
    I checked a national database of repairs and there is nothing for that code on that model year.

    Reply to Comment