P133D 2015 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 2015 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.
Code P133D 2015 GMC Sierra Description
What are the Possible Causes of the DTC P133D 2015 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 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.
Code Tech Notes
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P133D 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.
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Frequently Asked Questions about P133D 2015 GMC Sierra Code
1. What does the OBDII code P133D mean on a 2015 GMC Sierra?
The P133D code indicates that the Cylinder 6 Glow Plug Offset has exceeded the learning limit, meaning there is an issue with the glow plug system calibration for cylinder 6.
2. What are the symptoms of code P133D in a 2015 GMC Sierra?
Common symptoms include difficulty starting in cold weather, reduced engine performance, an illuminated check engine light, and possible misfires in cylinder 6.
3. What causes the P133D code to appear?
Potential causes include a faulty glow plug in cylinder 6, issues with the glow plug control module, wiring or connector problems, or incorrect calibration of the glow plug system.
4. Can a faulty glow plug trigger the P133D code?
Yes, a faulty or failing glow plug in cylinder 6 is one of the most common causes of this code.
5. How do I diagnose the P133D code on my GMC Sierra?
Start by scanning the vehicle with an OBDII tool to confirm the code. Inspect the glow plug in cylinder 6, check the wiring and connectors, and test the glow plug control module for proper operation.
6. Is it safe to drive with the P133D code?
While the truck may still be drivable, ignoring the issue can lead to harder starts in cold weather and potential long-term damage to the engine.
7. How can I fix the P133D code on a 2015 GMC Sierra?
The fix may involve replacing the cylinder 6 glow plug, repairing damaged wiring or connectors, or reprogramming the glow plug control module if calibration is incorrect.
8. How much does it cost to repair the P133D code?
Repair costs can range from $100 to $300 for glow plug replacement, but additional costs may apply if wiring or module repairs are needed.
9. Can I clear the P133D code without fixing the issue?
Clearing the code without addressing the root cause will likely result in the code returning, as the underlying problem remains unresolved.
10. How often do glow plugs need to be replaced in a 2015 GMC Sierra?
Glow plugs typically last 100,000 to 120,000 miles, but this can vary depending on driving conditions and maintenance habits.
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