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P133E 2016 GMC Sierra Code - Cylinder 7 Glow Plug Offset Exceeded Learning Limit

Quick Answer

The P133E diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the cylinder 7 glow plug offset has exceeded the learning limit. Common causes include Faulty glow plug in cylinder 7, Wiring issues or poor connections related to the glow plug, ECM software or hardware 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
P133E 2016 GMC Sierra indicates Cylinder 7 Glow Plug Offset Exceeded Learning Limit.
Common causes
Common causes include Faulty glow plug in cylinder 7, Wiring issues or poor connections related to the glow plug, ECM software or hardware 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 17, 2024
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Code P133E 2016 GMC Sierra Description

The P133E diagnostic trouble code (DTC) for a 2016 GMC Sierra indicates that the cylinder 7 glow plug offset has exceeded the learning limit. Glow plugs are essential components in diesel engines, as they help to heat the combustion chamber for easier cold starts. In this case, cylinder 7's glow plug offset has gone beyond the expected parameters, which can lead to issues with starting the engine, reduced performance, and potentially even engine damage if left unaddressed.

OBDII Code P133E 2016 GMC Sierra - Cylinder 7 Glow Plug Offset Exceeded Learning Limit
P133E 2016 GMC Sierra Code - Cylinder 7 Glow Plug Offset Exceeded Learning Limit

Common Causes of P133E 2016 GMC Sierra

  1. Faulty glow plug in cylinder 7.
  2. Wiring issues or poor connections related to the glow plug.
  3. ECM software or hardware malfunction.
  4. Extreme temperature changes affecting the glow plug's performance.
  5. Carbon buildup on the glow plug affecting its operation.

Symptoms of P133E 2016 GMC Sierra

  1. Difficulty starting the engine, especially in cold weather.
  2. Rough idling or misfiring.
  3. Decreased fuel efficiency.
  4. Illumination of the check engine light.
  5. Reduced engine performance.

How to Fix P133E 2016 GMC Sierra

  1. Begin by diagnosing the specific issue causing the glow plug offset to exceed the learning limit, using a scan tool to retrieve the DTC and pinpoint the problem.
  2. Inspect the glow plug in cylinder 7 for any signs of damage or malfunction, and replace it if necessary.
  3. Check the wiring and connections related to the glow plug for any faults or corrosion, repairing or replacing them as needed.
  4. Reset the ECM and clear the DTC to see if the issue persists, ensuring that the glow plug offset remains within the learning limit.
  5. Test the vehicle to confirm that the repair has been successful and that the symptoms associated with the P133E code have been resolved.

Cost to Fix P133E 2016 GMC Sierra

The typical repair costs for addressing a P133E code in a 2016 GMC Sierra can range from $200 to $500, depending on the specific cause of the issue and the cost of parts and labor in your area. It's important to note that diagnosis time and labor rates at auto repair shops can vary, so it's advisable to check with local shops for a more accurate estimate. Keep in mind that rates at dealerships or in metropolitan areas may be higher, while independent shops often offer more competitive prices.

What does this mean?

Tech Notes for P133E 2016 GMC Sierra

If a Glow Plug was replaced, perform a Glow Plug Learn procedure with a Scan Tool.

Need more information about the P133E 2016 GMC Sierra code?

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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 P133E 2016 GMC Sierra Code

1. What does the OBDII code P133E for a 2016 GMC Sierra mean?

The code P133E indicates that the Cylinder 7 Glow Plug Offset has exceeded the learning limit.

2. What are the common symptoms of the P133E OBDII code in a 2016 GMC Sierra?

Common symptoms may include rough idling, reduced engine performance, and the illumination of the Check Engine Light.

3. What are the possible causes of the P133E code in a 2016 GMC Sierra?

Potential causes of the P133E code include a faulty glow plug, issues with the glow plug control module, wiring problems, or software glitches.

4. How can I diagnose the P133E code in my 2016 GMC Sierra?

Diagnosing the P133E code may involve using an OBDII scanner to retrieve the code, inspecting the glow plug and related components, and checking the wiring for any issues.

5. Can I still drive my 2016 GMC Sierra with the P133E code present?

It is not recommended to drive your vehicle with the P133E code as it can lead to further engine damage and decreased fuel efficiency.

6. How do I repair the P133E code in my 2016 GMC Sierra?

Repairing the P133E code may involve replacing the faulty glow plug, addressing wiring issues, or reprogramming the control module.

7. Are there any DIY tips for fixing the P133E code in a 2016 GMC Sierra?

While some basic checks like inspecting the wiring connections can be done by DIY enthusiasts, it is recommended to consult a professional mechanic for a proper diagnosis and repair.

8. How much does it typically cost to fix the P133E code in a 2016 GMC Sierra?

The cost of fixing the P133E code can vary depending on the root cause of the issue, but it may range from a couple of hundred dollars to over a thousand dollars for more complex repairs.

9. Can the P133E code in a 2016 GMC Sierra cause any long-term damage if not addressed promptly?

Ignoring the P133E code can potentially lead to more severe engine problems, decreased fuel efficiency, and increased emissions, so it's important to address the issue promptly.

10. Is the P133E code a common issue in 2016 GMC Sierra vehicles?

While not as common as some other OBDII codes, the P133E code can still occur in 2016 GMC Sierra vehicles, especially if there are underlying issues with the glow plug system.

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