P151D 2018 GMC Sierra Code - Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect
Quick Answer
Control modules connected to the serial data circuits monitor the communication during normal vehicle operation. Common causes include Faulty Transmission Control Module, 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
- P151D 2018 GMC Sierra indicates Transmission Control Module Engine Shutdown Request Signal Message Counter Incorrect.
- Common causes
- Common causes include Faulty Transmission Control Module, 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 P151D 2018 GMC Sierra Description
What are the Possible Causes of the DTC P151D 2018 GMC Sierra?
- Faulty Transmission Control Module
- Transmission Control Module harness is open or shorted
- Transmission Control Module circuit poor electrical connection
How to Fix the DTC P151D 2018 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P151D 2018 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 P151D 2018 GMC Sierra code?
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Frequently Asked Questions about P151D 2018 GMC Sierra Code
1. What are the common symptoms of OBDII code P151D in a 2018 GMC Sierra?
- Common symptoms include the transmission control module (TCM) requesting an engine shutdown incorrectly, potential stalling or engine shutdown while driving, and an illuminated check engine light.
2. What can cause the OBDII code P151D to trigger in a 2018 GMC Sierra?
- The code P151D is usually triggered when the TCM detects an incorrect message counter related to engine shutdown requests, possibly due to a communication error between the TCM and other control modules.
3. How serious is the OBDII code P151D in a 2018 GMC Sierra?
- This code is considered serious as it can lead to unexpected engine shutdowns or stalling while driving, posing a safety risk. It is recommended to address this issue promptly.
4. What should I do if my 2018 GMC Sierra shows the OBDII code P151D?
- It is advisable to have the vehicle inspected by a qualified mechanic to diagnose the specific cause of the code. Ignoring the issue can result in potential safety hazards and further damage to the vehicle.
5. Can I continue driving my 2018 GMC Sierra with the OBDII code P151D?
- It is not recommended to continue driving the vehicle with this code present, as it may lead to sudden engine shutdowns or stalling. Have the vehicle checked by a professional as soon as possible.
6. How is the OBDII code P151D typically repaired in a 2018 GMC Sierra?
- The repair process usually involves diagnosing and addressing the underlying issue causing the incorrect message counter related to engine shutdown requests. This may involve repairing wiring faults, replacing sensors, or updating software.
7. Is resetting the OBDII code P151D sufficient, or should I seek professional repair?
- Simply resetting the code may temporarily clear the check engine light, but it will not fix the underlying issue causing the code. It is important to have the vehicle professionally diagnosed and repaired.
8. Can a DIY enthusiast address the OBDII code P151D in a 2018 GMC Sierra?
- While some skilled DIY enthusiasts may be able to diagnose and repair simpler issues related to this code, it is generally recommended to have a professional mechanic address the specific complexities of the TCM and related systems.
9. How much does it typically cost to repair the OBDII code P151D in a 2018 GMC Sierra?
- The cost of repairing this code can vary depending on the specific cause, parts needed, and labor rates. It is advisable to obtain multiple quotes from reputable repair shops to compare costs.
10. Will the OBDII code P151D cause permanent damage to the transmission or engine in a 2018 GMC Sierra?
- If left unaddressed, the underlying issue causing the code P151D could potentially lead to damage to the transmission or engine due to unexpected shutdowns or stalling. Addressing the problem promptly can help prevent further damage.
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