P17D4 2017 Chevrolet Silverado 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 Chevrolet Silverado 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 Chevrolet Silverado 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 Chevrolet Silverado?
- 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 Chevrolet Silverado?
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 Chevrolet Silverado 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 P17D4 2017 Chevrolet Silverado Code
1. What does the OBDII code P17D4 mean on a 2017 Chevrolet Silverado?
P17D4 indicates that the transfer case has detected the neutral range engaged when it should be in either high or low range.
2. What are the common symptoms of code P17D4 in a 2017 Chevrolet Silverado?
Common symptoms include a check engine light, inability to shift into 4WD modes, vehicle stuck in neutral, or unusual drivetrain noises.
3. What causes the P17D4 code to trigger on a 2017 Chevrolet Silverado?
The code is typically caused by a malfunctioning transfer case position sensor, faulty wiring or connectors, transfer case motor issues, or software glitches in the control module.
4. How can I diagnose the P17D4 code on my 2017 Chevrolet Silverado?
Start by scanning for additional trouble codes, visually inspecting the wiring and connectors around the transfer case, testing the transfer case position sensor, and checking the transfer case motor operation.
5. Can I drive my 2017 Chevrolet Silverado with the P17D4 code active?
It’s not recommended to drive the vehicle as it may remain stuck in neutral or fail to properly engage high or low range, potentially leading to unsafe conditions.
6. How do I fix the P17D4 code on a 2017 Chevrolet Silverado?
Repairs may involve replacing the transfer case position sensor, fixing damaged wiring or connectors, recalibrating the transfer case control module, or replacing the transfer case motor.
7. Is the P17D4 code a serious issue for my 2017 Chevrolet Silverado?
Yes, it can be serious as it may prevent proper drivetrain operation, leaving the vehicle stuck or unable to engage 4WD modes.
8. What tools are needed to troubleshoot the P17D4 code on a 2017 Chevrolet Silverado?
You’ll need an OBDII scanner, a multimeter to check electrical components, and potentially specialized tools to access and test the transfer case motor or position sensor.
9. How much does it cost to repair the P17D4 code on a 2017 Chevrolet Silverado?
Repair costs vary but may range from $100 to $500 or more, depending on whether the issue is a simple wiring repair or requires replacing components like the transfer case motor.
10. Can resetting the trouble code fix the P17D4 issue on my 2017 Chevrolet Silverado?
Clearing the code may temporarily turn off the check engine light, but the underlying issue must be resolved to prevent the code from returning.
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