AutoCodes – GMC – P17DF GMC

P17DF GMC Code - Transmission Range Control Module System High Voltage

Quick Answer

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. Common causes include Faulty Transmission Range Control Module, Transmission Range Control Module harness is open or shorted, Transmission Range 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
P17DF GMC indicates Transmission Range Control Module System High Voltage.
Common causes
Common causes include Faulty Transmission Range Control Module, Transmission Range Control Module harness is open or shorted, Transmission Range 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.
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Code Popularity 395
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jul 04, 2022
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Code P17DF GMC Description

The vehicle control modules or sensors monitor the system voltage to verify the system voltage is within the normal operating range. The Diagnostic Trouble Code (DTC) will be set when the Transmission Range Control Module detects a system voltage below or above a threshold.
OBDII Code P17DF GMC - Transmission Range Control Module System High Voltage - AutoCodes.com
P17DF GMC Code - Transmission Range Control Module System High Voltage

What are the Possible Causes of the DTC P17DF GMC?

  • Faulty Transmission Range Control Module
  • Transmission Range Control Module harness is open or shorted
  • Transmission Range Control Module circuit poor electrical connection

How to Fix the DTC P17DF GMC?

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 P17DF GMC 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 P17DF GMC code?

Need more information on how to fix the P17DF GMC code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the P17DF GMC code diagnosed by a professional: Find a repair shop in your area

Information for Specific GMC Models

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 P17DF GMC Code

1. What are the common symptoms of OBDII code P17DF GMC (Transmission Range Control Module System High Voltage)?

The common symptoms of this code may include issues with shifting gears, hesitation or jerking when accelerating, and the transmission being stuck in a single gear.

2. What are the possible causes of OBDII code P17DF GMC?

The possible causes of this code could be a faulty transmission range control module, damaged wiring or connectors in the transmission system, or a malfunctioning transmission position sensor.

3. How serious is OBDII code P17DF GMC?

This code typically indicates a problem with the transmission range control module system, which can affect the performance and safety of the vehicle. It is important to address this issue promptly to prevent further damage.

4. Can I continue driving with OBDII code P17DF GMC?

It is not recommended to continue driving with this code present, as it can lead to further damage to the transmission system. It is best to have the issue diagnosed and repaired as soon as possible.

5. How do I diagnose OBDII code P17DF GMC?

Diagnosing this code usually involves using a scan tool to retrieve the specific fault codes, checking the transmission range control module for any visible damage, and testing the transmission position sensor for proper operation.

6. How can I repair OBDII code P17DF GMC?

Repairing this code may involve replacing the transmission range control module, repairing or replacing damaged wiring or connectors, or recalibrating the transmission position sensor. It is recommended to consult a professional mechanic for an accurate diagnosis and repair.

7. How much does it cost to fix OBDII code P17DF GMC?

The cost of fixing this code can vary depending on the specific cause of the issue, the extent of the repairs needed, and the labor rates in your area. It is advisable to get a few quotes from different mechanics to compare prices.

8. Can a DIY enthusiast fix OBDII code P17DF GMC?

While some experienced DIY enthusiasts may be able to diagnose and repair this code, it is a complex issue related to the transmission system. It is recommended to seek help from a qualified mechanic to ensure the problem is properly addressed.

9. What should I do if OBDII code P17DF GMC keeps coming back after repairs?

If this code keeps coming back after repairs, it may indicate that the underlying issue was not fully resolved. It is important to have the vehicle rechecked by a mechanic to determine the root cause of the recurring problem.

10. Is OBDII code P17DF GMC a common issue in GMC vehicles?

While this code may not be as common as some other OBDII codes, issues with the transmission range control module system can occur in GMC vehicles. Regular maintenance and prompt attention to any warning lights or codes can help prevent such problems.

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