AutoCodes – GMC – P133D 2016 GMC Sierra

P133D 2016 GMC Sierra Code - Cylinder 6 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 6, Glow Plug 6 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: P133D 2016 GMC Sierra indicates Cylinder 6 Glow Plug Offset Exceeded Learning Limit.
Common causes: Common causes include Perform Glow Plug Learn procedure, Faulty Glow Plug 6, Glow Plug 6 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 171

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 P133D 2016 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 P133D 2016 GMC Sierra - Cylinder 6 Glow Plug Offset Exceeded Learning Limit - AutoCodes.com — P133D 2016 GMC Sierra Code - Cylinder 6 Glow Plug Offset Exceeded Learning Limit

What does this mean?

What are the Possible Causes of the DTC P133D 2016 GMC Sierra?

Perform Glow Plug Learn procedure
Faulty Glow Plug 6
Glow Plug 6 harness is open or shorted
Glow Plug 6 circuit poor electrical connection

How to Fix the DTC P133D 2016 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 P133D 2016 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 P133D 2016 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 P133D 2016 GMC Sierra Code

1. What does the OBDII code P133D mean on a 2016 GMC Sierra?

P133D indicates that the Cylinder 6 glow plug offset has exceeded its learning limit, meaning the glow plug's performance is outside the acceptable range for proper operation.

2. What are the common symptoms of code P133D on a 2016 GMC Sierra?

Symptoms may include difficulty starting the engine in cold weather, rough idle, reduced fuel efficiency, or an illuminated check engine light.

3. What causes the P133D code to appear on my 2016 GMC Sierra?

Common causes include a faulty glow plug in cylinder 6, wiring issues such as damaged or corroded connections, or a problem with the glow plug control module.

4. Can I drive my 2016 GMC Sierra with the P133D code?

Driving with the P133D code may be possible, but it is not recommended, especially in cold weather, as starting difficulties or further engine damage could occur.

5. How can I diagnose the P133D code on my 2016 GMC Sierra?

Diagnosis involves inspecting the glow plug and its wiring for damage, testing the electrical resistance of the glow plug, and checking the function of the glow plug control module.

6. How do I fix the P133D code on a 2016 GMC Sierra?

Repairs may include replacing the faulty glow plug in cylinder 6, repairing or replacing damaged wiring, or addressing issues with the glow plug control module.

7. How much does it cost to repair the P133D code on a 2016 GMC Sierra?

The cost varies but typically ranges from $100 to $300 for glow plug replacement, depending on labor and parts costs.

8. Can a bad glow plug cause other engine issues on a 2016 GMC Sierra?

Yes, a bad glow plug can cause hard starts, rough idling, and increased emissions, especially in cold temperatures.

9. Do I need special tools to fix the P133D code on my 2016 GMC Sierra?

Basic tools may be sufficient, but a multimeter is often needed for testing glow plug resistance and wiring continuity.

10. How can I prevent the P133D code from recurring on my 2016 GMC Sierra?

Regular maintenance, including inspecting and replacing glow plugs as needed and keeping electrical connections clean and secure, can help prevent this code.