P151D GMC Code - Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect
Quick Answer
The P151D GMC code indicates that the Transmission Control Module (TCM) has detected an incorrect signal message counter related to the engine shutdown request. Common causes include Faulty wiring or connections between TCM and other components, Malfunctioning TCM, Issues with the engine shutdown request signal circuit. 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
- P151D GMC indicates Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty wiring or connections between TCM and other components, Malfunctioning TCM, Issues with the engine shutdown request signal circuit.
- 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 P151D GMC Description
The P151D GMC code indicates that the Transmission Control Module (TCM) has detected an incorrect signal message counter related to the engine shutdown request. In simpler terms, the TCM is not receiving the correct number of signals it expects when the engine shutdown request is made. This can lead to various issues with the vehicle's transmission control and engine shutdown process.
Common Causes of P151D GMC
- Faulty wiring or connections between TCM and other components
- Malfunctioning TCM
- Issues with the engine shutdown request signal circuit
- Corrosion or damage to TCM connectors
- Software glitches or programming errors in the TCM
Symptoms of P151D GMC
- Erratic shifting patterns
- Harsh shifting
- Transmission slipping
- Engine not shutting down properly
- Transmission failure
How to Fix P151D GMC
- Perform a thorough inspection of the TCM wiring and connectors for any signs of damage or corrosion.
- Check the TCM for proper functionality and reprogram if necessary.
- Test the engine shutdown request signal circuit for continuity and repair any faults found.
- Clear the diagnostic trouble codes and reset the TCM to see if the issue persists.
- If the problem persists, consider replacing the TCM with a new unit to resolve the issue.
Cost to Fix P151D GMC
The typical repair costs for addressing the P151D GMC code can vary depending on the specific cause of the issue and the extent of the repairs needed. In general, the cost of parts for a TCM replacement can range from $200 to $800, while labor costs can add an additional $100 to $300. Overall, the total repair cost for this issue could range from $300 to $1100. It's important to note that these are rough estimates, and actual costs may vary based on factors such as location, vehicle make and model, and the specific diagnosis and repair process required. It's recommended to consult with a qualified mechanic or auto repair shop to get an accurate cost estimate for addressing the P151D GMC code.
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Information for Specific GMC Models
- P151D 2014 GMC Sierra — Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect
- P151D 2015 GMC Sierra — Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect
- P151D 2016 GMC Sierra — Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect
- P151D 2017 GMC Sierra — Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect
- P151D 2018 GMC Sierra — Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect
Frequently Asked Questions about P151D GMC Code
1. What are the common symptoms of OBDII code P151D GMC?
The common symptoms of OBDII code P151D GMC include engine shutdown while driving, poor transmission performance, and illuminated Check Engine Light.
2. What causes the OBDII code P151D GMC to trigger?
The OBDII code P151D GMC is triggered when the Transmission Control Module detects an incorrect signal message counter related to engine shutdown requests.
3. How serious is the OBDII code P151D GMC?
The OBDII code P151D GMC can be serious if left unaddressed, as it may lead to unexpected engine shutdowns and potentially unsafe driving conditions.
4. Can I continue driving with the OBDII code P151D GMC present?
It is not recommended to continue driving with the OBDII code P151D GMC present, as it can lead to transmission and engine performance issues.
5. How do I diagnose the OBDII code P151D GMC?
Diagnosing the OBDII code P151D GMC typically involves using a scan tool to read the code, inspecting the transmission control module, and checking for any loose or damaged wiring.
6. What are some repair tips for OBDII code P151D GMC?
Repair tips for OBDII code P151D GMC may include resetting the code, checking and repairing any faulty wiring connections, and updating the Transmission Control Module software.
7. Can a DIY enthusiast fix the OBDII code P151D GMC?
While some aspects of addressing the OBDII code P151D GMC can be done by a knowledgeable DIY enthusiast, it is recommended to consult a professional mechanic for proper diagnosis and repair.
8. How much does it cost to fix the OBDII code P151D GMC?
The cost of fixing the OBDII code P151D GMC can vary depending on the root cause of the issue, but it may involve costs for parts, labor, and potential software updates.
9. Is the OBDII code P151D GMC a common issue in GMC vehicles?
The OBDII code P151D GMC is not as common as other codes, but it can occur in GMC vehicles with transmission control module issues.
10. How can I prevent the OBDII code P151D GMC from recurring?
To prevent the OBDII code P151D GMC from recurring, it is important to address any underlying transmission control module issues promptly and perform regular maintenance on your vehicle.
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