P150C GMC Code - Transmission Control Module Engine Speed Request Signal Message Counter Incorrect
Quick Answer
To improve vehicle shift, and feel, the Transmission Control Module (TCM) is constantly sending the Engine Control Module (ECM) serial data messages with information regarding its request for modifying engine speed or torque. Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection. 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
- P150C GMC indicates Transmission Control Module Engine Speed Request Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Transmission Control Module (TCM), Transmission Control Module harness is open or shorted, Transmission Control Module circuit poor electrical connection.
- 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 P150C GMC Description
What are the Possible Causes of the DTC P150C GMC?
- Faulty Transmission Control Module (TCM)
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
How to Fix the DTC P150C GMC?
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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P150C GMC 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 P150C GMC code?
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Need Help with the Code?
Get the P150C GMC code diagnosed by a professional: Find a repair shop in your area
Information for Specific GMC Models
- P150C 2014 GMC Sierra — Transmission Control Module Engine Speed Request Signal Message Counter Incorrect
- P150C 2015 GMC Sierra — Transmission Control Module Engine Speed Request Signal Message Counter Incorrect
- P150C 2016 GMC Sierra — Transmission Control Module Engine Speed Request Signal Message Counter Incorrect
- P150C 2017 GMC Sierra — Transmission Control Module Engine Speed Request Signal Message Counter Incorrect
- P150C 2018 GMC Sierra — Transmission Control Module Engine Speed Request Signal Message Counter Incorrect
Frequently Asked Questions about P150C GMC Code
1. What are the common symptoms of OBDII code P150C GMC?
- Common symptoms include rough shifting, hesitation during acceleration, illuminated check engine light, and potential stalling.
2. What causes the OBDII code P150C GMC to trigger?
- The code is typically triggered by a malfunction in the Transmission Control Module (TCM) engine speed request signal message counter.
3. How can I diagnose the OBDII code P150C GMC?
- Diagnosis involves using a scan tool to retrieve the code, checking for any related codes, and performing a thorough inspection of the TCM and related components.
4. Is it safe to continue driving with the OBDII code P150C GMC present?
- It is not recommended to continue driving with this code present, as it can lead to further transmission issues and potential safety hazards.
5. Can a DIY enthusiast repair the OBDII code P150C GMC?
- While some may attempt DIY repairs, it is recommended to have a professional diagnose and repair this code due to the complexity of transmission control systems.
6. What are some possible repair options for the OBDII code P150C GMC?
- Repair options may include resetting the TCM, replacing faulty sensors or wiring, updating software, or replacing the TCM itself.
7. How much does it typically cost to repair the OBDII code P150C GMC?
- Repair costs can vary depending on the extent of the issue and the specific repairs needed, but they can range from a few hundred to over a thousand dollars.
8. Can a low battery voltage trigger the OBDII code P150C GMC?
- Yes, low battery voltage or electrical issues can sometimes trigger this code, so it's important to check the battery and electrical system as part of the diagnosis.
9. Is the OBDII code P150C GMC specific to GMC vehicles only?
- While the code may be more common in GMC vehicles, it can also occur in other makes and models with similar transmission control systems.
10. How can I prevent the OBDII code P150C GMC from recurring in the future?
- To prevent the code from recurring, it's important to address any underlying issues promptly, perform regular maintenance on the transmission system, and avoid harsh driving habits that can strain the TCM.
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