AutoCodes – Chevrolet – P17D4 2018 Chevrolet Silverado

P17D4 2018 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 2018 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.

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Code Popularity 395

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Aug 29, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P17D4 2018 Chevrolet Silverado Description

The Engine Control Module (ECM) uses the following two ways to determine if the transfer case is in 4WD Low, 4WD High, or Neutral.
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.

OBDII Code P17D4 2018 Chevrolet Silverado - Transfer Case Neutral Range Detected in High or Low Range - AutoCodes.com — P17D4 2018 Chevrolet Silverado Code - Transfer Case Neutral Range Detected in High or Low Range

What does this mean?

What are the Possible Causes of the DTC P17D4 2018 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 2018 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 2018 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.

Need more information about the P17D4 2018 Chevrolet Silverado code?

Need more information on how to fix the P17D4 2018 Chevrolet Silverado code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P17D4 2018 Chevrolet Silverado code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P17D4 2018 Chevrolet Silverado Code

1. What are the common symptoms of OBDII code P17D4 in a 2018 Chevrolet Silverado?

The common symptoms of OBDII code P17D4 include difficulty shifting gears, erratic behavior of the transfer case, and the vehicle getting stuck in neutral range.

2. What causes the OBDII code P17D4 to trigger in a 2018 Chevrolet Silverado?

The OBDII code P17D4 is triggered in a 2018 Chevrolet Silverado when the transfer case control module detects that the neutral range has been engaged while the vehicle is in high or low range.

3. How serious is the OBDII code P17D4 in a 2018 Chevrolet Silverado?

The OBDII code P17D4 in a 2018 Chevrolet Silverado should be addressed promptly to prevent potential damage to the transfer case and drivetrain components. It is advisable to avoid driving the vehicle until the issue is resolved.

4. Can I continue driving my 2018 Chevrolet Silverado with the OBDII code P17D4 present?

It is not recommended to continue driving your 2018 Chevrolet Silverado with the OBDII code P17D4 present, as it can lead to further damage to the transfer case and drivetrain components. Seek professional assistance to diagnose and repair the issue.

5. How can I repair the OBDII code P17D4 in my 2018 Chevrolet Silverado?

To repair the OBDII code P17D4 in your 2018 Chevrolet Silverado, you may need to inspect and potentially replace the transfer case range sensor, check for any wiring issues, and reset the transfer case control module.

6. Is it possible to reset the OBDII code P17D4 in a 2018 Chevrolet Silverado without professional help?

While you can attempt to reset the OBDII code P17D4 in a 2018 Chevrolet Silverado by disconnecting the battery for a few minutes, it is recommended to have the issue properly diagnosed and repaired by a professional to prevent further problems.

7. How much does it typically cost to repair the OBDII code P17D4 in a 2018 Chevrolet Silverado?

The cost to repair the OBDII code P17D4 in a 2018 Chevrolet Silverado can vary depending on the extent of the issue, parts needed for replacement, and labor costs. It is advisable to get a diagnostic and repair estimate from a certified mechanic.

8. Can the OBDII code P17D4 in a 2018 Chevrolet Silverado be a recurring problem?

If the underlying issue causing the OBDII code P17D4 in a 2018 Chevrolet Silverado is not properly addressed, it can potentially recur. Regular maintenance and prompt repairs can help prevent the code from reappearing.

9. Are there any preventive measures to avoid the OBDII code P17D4 in a 2018 Chevrolet Silverado?

Regularly inspecting and maintaining the transfer case components, including the range sensor, can help prevent issues that may trigger the OBDII code P17D4 in a 2018 Chevrolet Silverado. Following the manufacturer's recommended maintenance schedule is also crucial.

10. Can weather or driving conditions affect the occurrence of the OBDII code P17D4 in a 2018 Chevrolet Silverado?

Extreme weather conditions or off-road driving can potentially impact the transfer case operation and trigger the OBDII code P17D4 in a 2018 Chevrolet Silverado. It is important to drive cautiously and avoid rough terrain if you suspect an issue with the transfer case.