AutoCodes – GMC – P133E 2014 GMC Sierra

P133E 2014 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 2014 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 127

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 2014 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 2014 GMC Sierra - Cylinder 7 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133E 2014 GMC Sierra Code - Cylinder 7 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133E 2014 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 2014 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 2014 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 2014 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 2014 GMC Sierra Code

1. What does the OBDII code P133E mean on a 2014 GMC Sierra?

P133E indicates that the glow plug offset for cylinder 7 has exceeded the learning limit, meaning thereâ€™s an issue with the glow plug circuit or calibration for that cylinder.

2. What are the symptoms of code P133E on a 2014 GMC Sierra?

Symptoms may include difficulty starting the engine in cold weather, rough idling, reduced fuel efficiency, and the check engine light being illuminated.

3. What causes the P133E code to appear in a 2014 GMC Sierra?

Common causes include a faulty glow plug, damaged glow plug wiring or connectors, a malfunctioning glow plug control module, or calibration issues with the glow plug system.

4. Can I drive my 2014 GMC Sierra with the P133E code active?

While the truck may still run, driving with this code can lead to harder engine starts in cold weather and potential long-term damage to the glow plug system. Itâ€™s best to address the issue promptly.

5. How do I diagnose the P133E code on my 2014 GMC Sierra?

Diagnosis involves testing the glow plug for cylinder 7, inspecting the wiring and connectors, and using a scan tool to verify the glow plug system's operation and offset values.

6. How do I fix the P133E code on a 2014 GMC Sierra?

Repairs may include replacing the cylinder 7 glow plug, repairing damaged wiring or connectors, reprogramming the engine control module (ECM), or replacing the glow plug control module if necessary.

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

The cost can vary, but replacing a glow plug typically ranges from $150 to $300, depending on labor rates and parts pricing. Additional costs may apply if other components need repair.

8. Can a faulty glow plug cause engine damage in a 2014 GMC Sierra?

While a single faulty glow plug usually wonâ€™t cause immediate engine damage, prolonged issues can lead to harder starts and increased stress on the engine, especially in cold conditions.

9. What tools are needed to fix the P133E code?

Common tools include a scan tool to read and clear codes, a multimeter to test electrical connections, and basic hand tools to remove and replace the glow plug or related components.

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

Regular maintenance, such as inspecting the glow plug system during service intervals and addressing any electrical issues promptly, can help prevent this code from recurring.