P2544 2016 GMC Sierra Code - Torque Management Request Input Signal 'A'
Quick Answer
To improve shift feel, the Transmission Control Module (TCM) may request that the Engine Control Module (ECM) reduce engine torque during shift events. Common causes include Faulty Engine Control Module (ECM), Faulty Transmission Control Module (TCM), Engine Control Module (ECM) software update. 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
- P2544 2016 GMC Sierra indicates Torque Management Request Input Signal 'A'.
- Common causes
- Common causes include Faulty Engine Control Module (ECM), Faulty Transmission Control Module (TCM), Engine Control Module (ECM) software update.
- 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 P2544 2016 GMC Sierra Description
The torque reduction request is sent to the ECM through a communication network called the controller area network (CAN). Two circuits are used to communicate CAN data between the ECM and TCM.
A fault in the CAN will not cause the ECM to set the Diagnostic Trouble Codes (DTC). If a CAN fault occurs, other DTCs will set before this code.
The ECM set the OBDII code when the TCM receives a torque reduction failure message from the ECM.
What are the Possible Causes of the DTC P2544 2016 GMC Sierra?
- Faulty Engine Control Module (ECM)
- Faulty Transmission Control Module (TCM)
- Engine Control Module (ECM) software update
- Transmission Control Module (TCM) software update
- Engine Control Module (ECM) harness is open or shorted
- Engine Control Module (ECM) circuit poor electrical connection
How to Fix the DTC P2544 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 is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the P2544 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.
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Frequently Asked Questions about P2544 2016 GMC Sierra Code
1. What does the OBDII code P2544 mean on a 2016 GMC Sierra?
P2544 indicates an issue with the Torque Management Request Input Signal 'A,' which means the powertrain control module (PCM) has detected an abnormal or missing signal related to torque management.
2. What are the common symptoms of code P2544 in a 2016 GMC Sierra?
Common symptoms include reduced engine performance, the vehicle going into limp mode, delayed or hard shifting, and an illuminated check engine light.
3. What causes the P2544 code on a 2016 GMC Sierra?
Possible causes include a faulty torque management request sensor, damaged or corroded wiring or connectors, issues with the PCM, or a malfunction in the transmission control module (TCM).
4. Can driving with the P2544 code damage my 2016 GMC Sierra?
Driving with this code can lead to severe transmission or engine performance issues if left unaddressed, as the torque management system is crucial for proper operation.
5. How do I diagnose the P2544 code on a 2016 GMC Sierra?
Start by using an OBDII scanner to confirm the code, inspect the wiring and connectors for damage or corrosion, and test the torque management request sensor and related circuits for proper operation.
6. How is the P2544 code fixed on a 2016 GMC Sierra?
Repairs may include replacing the torque management request sensor, repairing damaged wiring or connectors, updating the PCM software, or replacing the PCM or TCM if necessary.
7. Does the P2544 code always mean a faulty sensor?
No, the issue could also stem from wiring problems, software glitches, or malfunctions in the PCM or TCM rather than the sensor itself.
8. Can I reset the P2544 code on my 2016 GMC Sierra without repairs?
While you can clear the code with an OBDII scanner, it will likely return if the underlying issue isn’t resolved, so proper diagnosis and repair are necessary.
9. How much does it cost to fix the P2544 code on a 2016 GMC Sierra?
Repair costs vary depending on the issue but can range from $100 for wiring repairs to over $1,000 if the PCM or TCM needs replacement.
10. Can a software update fix the P2544 code on a 2016 GMC Sierra?
In some cases, a PCM or TCM software update can resolve the issue, especially if the code is caused by a known software glitch. Check with your dealer for any available updates.
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