P17D4 2017 GMC Sierra Code - Transfer Case Neutral Range Detected in High or Low Range
Quick Answer
The Engine Control Module (ECM) uses the following two ways to determine if the transfer case is in 4WD Low, 4WD High, or Neutral. Common causes include Reprogram Engine Control Module (ECM), Faulty Engine Control Module, Engine Control Module 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
- P17D4 2017 GMC Sierra indicates Transfer Case Neutral Range Detected in High or Low Range.
- Common causes
- Common causes include Reprogram Engine Control Module (ECM), Faulty Engine Control Module, Engine Control Module 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 P17D4 2017 GMC Sierra Description
1. The first way is to compare the transmission output speed sensor to the transfer case output speed sensor in order to calculate the transfer case range.
2. The second way is to use a LAN message sent by the transfer case shift control module to the ECM.
The ECM uses this message to determine motor torque required and transmission shifting.
The internal fault detection is handled inside the control module. No external circuit diagnosis is involved.
If the first way and second way of determining transfer case range do not match while in 4WD Low, 4WD High or Neutral, then the Diagnostic Trouble Code (DTC) is set.
What are the Possible Causes of the DTC P17D4 2017 GMC Sierra?
- Reprogram Engine Control Module (ECM)
- Faulty Engine Control Module
- Engine Control Module harness is open or shorted
- Engine Control Module circuit poor electrical connection
- Transmission internal mechanical problems
How to Fix the DTC P17D4 2017 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 P17D4 2017 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 P17D4 2017 GMC Sierra code?
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Frequently Asked Questions about P17D4 2017 GMC Sierra Code
1. What are the common symptoms of OBDII code P17D4 in a 2017 GMC Sierra?
The common symptoms include difficulty shifting gears, the vehicle stuck in a particular gear, and a warning light on the dashboard indicating an issue with the transfer case.
2. What are the possible causes of OBDII code P17D4 in a 2017 GMC Sierra?
The code P17D4 can be triggered by issues such as a faulty transfer case position sensor, damaged wiring or connectors, or a malfunctioning transfer case control module.
3. How serious is the OBDII code P17D4 in a 2017 GMC Sierra?
This code should be addressed promptly as it can affect the drivability of the vehicle and potentially lead to further damage to the transfer case components if left unresolved.
4. Can I continue driving my 2017 GMC Sierra with OBDII code P17D4?
It is not recommended to drive the vehicle with this code present, as it can cause further damage to the transfer case and may result in unsafe driving conditions.
5. How can I diagnose OBDII code P17D4 in my 2017 GMC Sierra?
Diagnosing this code typically involves using a scan tool to retrieve the specific error codes, inspecting the transfer case components, checking for damaged wiring, and testing the transfer case position sensor.
6. What are some repair tips for fixing OBDII code P17D4 in a 2017 GMC Sierra?
Repairing this code may involve replacing the transfer case position sensor, repairing any damaged wiring or connectors, or recalibrating the transfer case control module.
7. Can a DIY enthusiast fix OBDII code P17D4 in a 2017 GMC Sierra?
While some basic diagnostic steps can be taken by a DIY enthusiast, resolving this code may require specialized tools and expertise, so it is recommended to consult a professional mechanic.
8. How much does it cost to repair OBDII code P17D4 in a 2017 GMC Sierra?
The cost of repairing this code can vary depending on the exact cause of the issue, the labor rates of the mechanic, and the cost of any replacement parts needed.
9. Is it possible to prevent OBDII code P17D4 from occurring in a 2017 GMC Sierra?
Regular maintenance of the transfer case components, checking for any signs of wear or damage, and addressing any issues promptly can help prevent the occurrence of this code.
10. Can OBDII code P17D4 in a 2017 GMC Sierra be related to other transmission or drivetrain problems?
While this code specifically indicates an issue with the transfer case neutral range, it is essential to inspect other transmission and drivetrain components for potential related problems that may be contributing to the issue.
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