AutoCodes – GMC – P133E 2015 GMC Sierra

P133E 2015 GMC Sierra Code - Cylinder 7 Glow Plug Offset Exceeded Learning Limit

Quick Answer

The Glow Plug Control Module has not learned the glow plug offset values. Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 7, Glow Plug 7 harness is open or shorted. 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 2015 GMC Sierra indicates Cylinder 7 Glow Plug Offset Exceeded Learning Limit.
Common causes: Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 7, Glow Plug 7 harness is open or shorted.
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.

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Code Popularity 161

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Sep 30, 2022

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code P133E 2015 GMC Sierra Description

The Glow Plug Control Module has not learned the glow plug offset values. If a glow plug has been replaced and the glow plug learn was not performed, or if the Glow Plug Control Module experiences an Electronically Erasable Programmable Read Only Memory (EEPROM) error or data corruption, this Diagnostic Trouble Code (DTC) to set. The DTC will be set if the glow plug hot resistance is outside a predefined threshold.

OBDII Code P133E 2015 GMC Sierra - Cylinder 7 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133E 2015 GMC Sierra Code - Cylinder 7 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133E 2015 GMC Sierra?

Perform Glow Plug Learn procedure
Faulty Glow Plug 7
Glow Plug 7 harness is open or shorted
Glow Plug 7 circuit poor electrical connection

How to Fix the DTC P133E 2015 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

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

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P133E 2015 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the P133E 2015 GMC Sierra code?

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Need Help with the 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 2015 GMC Sierra Code

1. What does the OBDII code P133E mean on a 2015 GMC Sierra?

P133E indicates that the glow plug offset for cylinder 7 has exceeded its learning limit, typically related to the glow plug system used in diesel engines for cold starts.

2. What are the symptoms of code P133E in a 2015 GMC Sierra?

Symptoms may include difficulty starting in cold weather, reduced engine performance, a rough idle, and the check engine light being illuminated.

3. What causes the P133E code to trigger in a 2015 GMC Sierra?

Common causes include a faulty glow plug in cylinder 7, issues with the glow plug control module, poor electrical connections, or excessive carbon buildup around the glow plug.

4. Can I drive my 2015 GMC Sierra with a P133E code?

While the truck may still be drivable, prolonged operation with this code can lead to hard starts and increased emissions, especially in cold weather. Prompt diagnosis and repair are recommended.

5. How do I diagnose the P133E code in a 2015 GMC Sierra?

Diagnosis typically involves inspecting the cylinder 7 glow plug for wear or damage, checking the wiring and connectors for continuity, and testing the glow plug control module.

6. How do I fix the P133E code on a 2015 GMC Sierra?

Repairs may involve replacing the faulty glow plug in cylinder 7, cleaning carbon buildup, repairing damaged wiring, or replacing the glow plug control module if necessary.

7. What tools are needed to diagnose and fix a P133E code?

Tools include an OBDII scanner, a multimeter for electrical testing, and possibly a socket set for removing and replacing the glow plug.

8. How much does it cost to repair the P133E code on a 2015 GMC Sierra?

Repair costs can range from $100 to $300, depending on whether just the glow plug needs replacement or if additional components like the control module are faulty.

9. Can a faulty glow plug in cylinder 7 cause engine damage?

A faulty glow plug itself wonâ€™t typically cause engine damage, but it can lead to starting issues and misfires, which over time may stress other engine components.

10. How can I prevent the P133E code from recurring?

Regular maintenance, including periodic inspection and replacement of glow plugs as needed, as well as keeping electrical connections clean and secure, can help prevent this issue.